學生成績管理系統c
① 學生成績管理系統 C語言
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct stud
{
long num;
char name[20];
double score;
};
typedef struct stucode
{
struct stud student ;
struct stucode *next;
}L;
void menu();
void createlist(struct stucode **r);
void out(struct stucode *r);
void search1(struct stucode *r);
void search2(struct stucode *r);
void del(struct stucode **r);
void insert(struct stucode **r);
void sort(struct stucode **r);
void main()
{
char choose;
int flag=1;
struct stucode *r=NULL;
while(flag)
{
system("cls");
menu();
choose=getchar();
switch(choose)
{
case '1':
createlist(&r);
out(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '2':
search1(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '3':
search2(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '4':
del(&r);
out(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '5':
insert(&r);
out(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '6':
sort(&r);
out(r);
printf("Testing function 1\nPress any key to continue\n");
getchar();
getchar();
break;
case '7':
out(r);
printf("Testing function 7\nPress any key to continue\n");
getchar();
getchar();
break;
case '0':
flag=0;
printf("The end.\n");
break;
default: printf("\nWrong Selection!(選擇錯誤,請重選!)\n");getchar();getchar();
}
}
}
void createlist(struct stucode **r)
{
struct stucode *p,*t;
long n;
char a[20];
double s;
if(*r) *r=NULL;
printf(" \n請輸入：\n 學號（請按學號升序排列） 姓名 分數 （若要結束請輸入三個為零）
\n");
scanf("%ld%s%lf",&n,a,&s);
if(n==0) return;
p=(L *)malloc(sizeof(L));
p->student.num=n;
strcpy(p->student.name,a);
p->student.score=s;
p->next=NULL;
*r=p;
scanf("%ld%s%lf",&n,a,&s);
while(n)
{
t=p;
p=(L *)malloc(sizeof(L));
p->student.num=n;
strcpy(p->student.name,a);
p->student.score=s;
p->next=NULL;
t->next=p;
scanf("%ld%s%lf",&n,a,&s);
}
}
void search1(struct stucode *r)
{
long x;
if(!r)
{
printf("沒有學生信息可查詢!\n");
return ;
}
printf(" 請輸入要查詢的學生信息的學生學號:\n");
scanf("%ld",&x);
while(r&&r->student.num!=x)
r=r->next;
if(r==NULL)
printf("Error! No such student !\n");
else
printf("%ld %s %.2lf\n",r->student.num,r->student.name,r->student.score);
}
void search2(struct stucode *r)
{
char m[20];
if(!r)
{
printf("沒有學生信息可查詢!\n");
return ;
}
printf(" 請輸入要查詢的學生信息的學生姓名:\n");
scanf("%s",m);
while(r&&strcmp(r->student.name,m))
r=r->next;
if(r==NULL)
printf("Error! No such student !\n");
else
printf("%ld %s %.2lf\n",r->student.num,r->student.name,r->student.score);
}
void del(struct stucode **r)
{
long k;
struct stucode *p=*r,*t;
if(!(*r))
{
printf("沒有學生信息可刪除 !\n");
return ;
}
printf(" 請輸入要刪除的學生信息的學生學號:\n");
scanf("%ld",&k);
if(p->student.num==k)
*r=(*r)->next,free(p);
else
{
while(p->next&&p->next->student.num!=k)
p=p->next;
if(p->next==NULL)
printf("Error! No such student !\n");
else
{
t=p->next;
p->next=p->next->next;
free(t);
}
}
}
void insert(struct stucode **r)
{
long n;
char a[20];
double s;
L *p,*t,*k;
printf(" 請輸入要插入的學生信息的學生學號 姓名 分數:\n");
scanf("%ld%s%lf",&n,a,&s);
p=(L *)malloc(sizeof(L));
p->student.num=n;
p->student.score=s;
strcpy(p->student.name,a);
if(!(*r))
{
*r=p;
(*r)->next=NULL;
return ;
}
if(p->student.num<(*r)->student.num)
p->next=(*r),(*r)=p;
else
{
t=*r;
k=t;
while(t->next&&t->next->student.num<=p->student.num)
t=t->next;
p->next=t->next;
t->next=p;
*r=k;
}
}
void sort(struct stucode **r)
{
struct stucode *t,*p,*q,*z;
if(!r)
{
printf("沒有學生信息可排序!\n");
return ;
}
if(!(*r)||!(*r)->next)
return;
t=*r;
p=t->next;
t->next=NULL;
while(p)
{
q=p->next;
if(p->student.score>t->student.score)
{
p->next=t;
t=p;
}
else
{
z=t;
while(z->next&&z->next->student.score>=p->student.score)
z=z->next;
p->next=z->next;
z->next=p;
}
p=q;
}
*r=t;
}
void out(struct stucode *r)
{
printf("\n\n");
if(!r)
{
printf("沒有學生信息可輸出!\n");
return ;
}
while(r)
{
printf("%ld %s %.2lf\n",r->student.num,r->student.name,r->student.score);
r=r->next;
}
printf("\n\n");
}
void menu()
{
printf("\n 學生信息管理系統\n");
printf("\n 菜單\n\n");
printf("\n 1建立鏈表並顯示\n");
printf("\n 2查找某學號的學生信息\n");
printf("\n 3查找某姓名的學生信息\n");
printf("\n 4刪除某學號的學生信息\n");
printf("\n 5插入新的學生信息\n");
printf("\n 6按分數降序排列輸出\n");
printf("\n 7輸出\n");
printf("\n 0退出\n");
printf("\n 請選擇您要執行的選項:\n");
}
② 學生成績管理系統c語言
用C語言程序編寫一個學生成績管理系統，界面用菜單進行設計。菜單功能可用函數實現。
# include <iostream>
# include <fstream>
# include <string.h>
#include <conio.h>//用getch();
using namespace std;
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌Student類﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
class Student
{
public:
char name[20];
char Id[20];
int Cnum; //C++課程得分
int Mnum; //匯編課程得分
int Enum; //嵌入式操作系統課程得分
int sum; //總分
Student * Next;
void Input()
{
cout<<"\t\t請輸入學生的姓名："; cin>>name;
cout<<"\t\t請輸入學生的學號："; cin>>Id;
cout<<"\t\t請輸入C++課程的成績："; cin>>Cnum;
cout<<"\t\t請輸入匯編課程的成績："; cin>>Mnum;
cout<<"\t\t請輸入嵌入式操作系統課程的成績："; cin>>Enum;
sum=Cnum+Mnum+Enum;
}
void ReadFile(istream & in)
{
in>>name>>Id>>Cnum>>Mnum>>Enum>>sum;
}
void Show()
{
cout<<"姓名:"<<name<<endl<<"學號:"<<Id<<endl<<"C++:"<<Cnum<<endl
<<"匯編:"<<Mnum<<endl<<"嵌入式操作系統："<<Enum<<endl<<"總成績:"<<sum<<endl<<endl<<endl;
}
};
//﹌﹌﹌﹌﹌﹌﹌﹌﹌Studentmassage類﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
class Studentmassage
{
public:
Studentmassage();
~Studentmassage();
void ShowMenu();
void Find();
void Save();
void ModifyItem();
void RemoveItem();
void Swap(Student *,Student *);
void Sort();
//void Unpass();
int ListCount();
//void Average();
void Display()
{
for(Student * p=Head->Next;p!=End;p=p->Next)
p->Show();
cout<<"輸入任意字元！繼續……";
getch();
}
void AddItem()
{
End->Input();
End->Next=new Student;
End=End->Next;
cout<<"添加成功!"<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
private:
Student * Head,* End;
ifstream in;
ofstream out;
Student *FindItem(char * name)
{
for(Student * p=Head;p->Next!=End;p=p->Next)//匹配成功則返回上一個指針，不成功就返回空
if(!strcmp(p->Next->name,name))return p;
return NULL;
}
Student *FindID(char * Id)
{
for(Student * p=Head;p->Next!=End;p=p->Next)//匹配成功則返回上一個指針，不成功就返回空
if(!strcmp(p->Next->Id,Id))return p;
return NULL;
}
};
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌構造函數﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
Studentmassage::Studentmassage()
{
Head=new Student;
Head->Next=new Student;
End=Head->Next;
in.open("sort.txt");
if(!in)
cout<<"這是一個新系統，無學生信息。請先輸入。"<<endl;
else
{
while(!in.eof())
{
End->ReadFile(in);
if(End->name[0]=='\0')break;
End->Next=new Student;
End=End->Next;
}
in.close();
cout<<"\t\t讀取學生信息成功!"<<endl;
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌析構函數﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
Studentmassage::~Studentmassage()
{
Save();
for(Student * temp;Head->Next!=End;)
{
temp=Head->Next;
Head->Next=Head->Next->Next;
delete temp;
}
delete Head,End;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌菜單﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::ShowMenu()
{
cout<<"********************************************************************************"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓〓 ☆ 學 生 成 績 管 理 系 統 ☆ 〓〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓★★★★★ ★★★★★★★ ★★★★★〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 1.增加學生成績 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 2.顯示學生成績 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 3.排序統計成績 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 4.查找學生成績 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 5.刪除學生成績 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 6.修改學生信息 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"〓〓〓〓〓〓〓〓〓★ ☆ 0.安全退出系統 ☆ ★〓〓〓〓〓〓〓〓〓"<<endl;
cout<<"\n\t\t\n\t\t請選擇：";
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌查找函數﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Find()
{
char name[20] ,Id[10];
int x;
Student * p=NULL;
cout<<"\n\t\t*********************************\n";
cout<<"\t\t※ 1.按學生的姓名查找\n\t\t※ 2.按學生學號查找";
cout<<"\n\t\t*********************************\n請選擇：";
cin>>x;
switch(x)
{
case 1:{cout<<"\t\t請輸入要查找的學生的姓名：";cin>>name;
if(p=FindItem(name))
{
p->Next->Show();
cout<<"輸入任意字元！繼續……";
getch();
}
else
{
cout<<"\t\t沒有找到該姓名的學生！"<<'\n'<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
}break;
case 2:
{
cout<<"\t\t請輸入要查找的學生的學號：";cin>>Id;
if(p=FindID(Id))
{
p->Next->Show();
cout<<"輸入任意字元！繼續……";
getch();
}
else
{
cout<<"\t\t沒有找到該學好的學生！"<<'\n'<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
}break;
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌修改信息﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::ModifyItem() //修改信息
{
char name[20];
Student * p=NULL;
cout<<"\t\t請輸入要修改的人的姓名:";cin>>name;
if(p=FindItem(name))
{
cout<<"\t\t已找到學生的信息，請輸入新的信息!"<<endl;
p->Next->Input();
cout<<"修改成功！"<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
else
{
cout<<"\t\t沒有找到!"<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌刪除信息﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::RemoveItem() // 刪除信息
{
char name[20];
Student * p=NULL,*temp=NULL;
cout<<"\t\t請輸入要刪除的學生的姓名:"<<endl;cin>>name;
if(p=FindItem(name))
{
temp=p->Next;
p->Next=p->Next->Next;
delete temp;
cout<<"\t\t刪除成功!"<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
else
{
cout<<"\t\t沒有找到!"<<endl;
cout<<"輸入任意字元！繼續……";
getch();
}
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Swap(Student *p1, Student *p2)//交換兩個combox變數的數據域
{
Student *temp=new Student;
strcpy(temp->name,p1->name);
strcpy(temp->Id,p1->Id);
temp->Cnum=p1->Cnum;
temp->Mnum=p1->Mnum;
temp->Enum=p1->Enum;
temp->sum=p1->sum;
strcpy(p1->name,p2->name);
strcpy(p1->Id,p2->Id);
p1->Cnum=p2->Cnum;
p1->Mnum=p2->Mnum;
p1->Enum=p2->Enum;
p1->sum=p2->sum;
strcpy(p2->name,temp->name);
strcpy(p2->Id,temp->Id);
p2->Cnum=temp->Cnum;
p2->Mnum=temp->Mnum;
p2->Enum=temp->Enum;
p2->sum=temp->sum;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
int Studentmassage::ListCount()//統計當前鏈表的記錄總數，返回一個整數
{
if(! Head)
return 0;
int n=0;
for(Student * p=Head->Next;p!=End;p=p->Next)
{
n++;
}
return n;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Sort()//對當前鏈表進行排序
{
cout <<"Sorting..."<<endl;
Student *p=NULL,*p1=NULL,*k=NULL;
int n=Studentmassage::ListCount();
if(n<2)
return;
for(p=Head->Next;p!=End;p=p->Next)
for(k=p->Next;k!=End;k=k->Next)
{
if(p->sum>k->sum)
{
Studentmassage::Swap(p,k);
}
}
cout <<"排序完成！"<<endl;
getch();
return;
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌保存函數﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
void Studentmassage::Save()
{
out.open("sort.txt");
for(Student *p=Head->Next;p!=End;p=p->Next)
out<<p->name<<"\t"<<p->Id<<"\t"<<p->Cnum<<"\t"
<<p->Mnum<<"\t"<<p->Enum<<"\t"<<p->sum<<'\n';
out.close();
}
//﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌主函數﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌
int main()
{
int x,i=0;
bool quit=false;
cout<<"\t\t§§§§§§§§§§§§§§§§§§§§§§§§§§"<<endl;
for(i=0;i<3;i++)
cout<<"\t\t◎\t\t\t\t\t\t ◎"<<endl;
cout<<"\t\t◎★★★★【 歡迎進入學生成績管理系統 】★★★★◎"<<endl;
for(i=0;i<3;i++)
cout<<"\t\t◎\t\t\t\t\t\t ◎"<<endl;
cout<<"\t\t§§§§§§§§§§§§§§§§§§§§§§§§§§\n"<<endl;;
Studentmassage Grade;
cout<<"按任意鍵開始……";
getch();
while(!quit)
{
system("cls");
Grade.ShowMenu();
cin>>x;
switch(x)
{
case 0:quit=true;break;
case 1:Grade.AddItem();break;
case 2:Grade.Display();break;
case 3:Grade.Sort();break;
case 4:Grade.Find();break;
case 5:Grade.RemoveItem();break;
case 6:Grade.ModifyItem();break;
}
}
return 0;
}
③ c語言學生成績管理系統c
以前幫別人寫的 你可以看看 呵呵 不是很符合條件
********************************學生管理系統****************************/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct stu1
{
int num;
char name[20];
char sex[5];
char age[3];
char phone[20];
}stu1;
typedef struct stu2
{
//char num[20];
//char name[20];
int proj1;
int proj2;
int proj3;
int proj4;
int proj5;
int proj6;
}stu2;
void welcome();
int check_key(char key[]);
int m_can_do();
int m_class_can_do();
void manage_class();
void add_class();
void del_class();
void change_proj();
int m_stu_can_do();
void manage_stu();
void log_stu();
void change_stu();
void read_stu1(char clas[], stu1 stu[]);
int find_stu(stu1 stu[], int num);
void del_stu();
void read_stu2(char clas1[], stu2 stud[]);
void log_score();
void change_score();
void del_clas_stu();
int m_find_can_do();
void find();
void find_clas_basic();
void find_clas_score();
void find_stu_basic();
void find_stu_all();
//void chane_stu();
int main(){
int does;
char key[20];
int result;
welcome();
printf("請輸入密碼：");
scanf("%s", key);
printf("\n\n");
result = check_key(key);
while(result)
{
printf("您輸入的密碼有誤，請重新輸入：");
scanf("%s", key);
result = check_key(key);
printf("\n\n");
}
does = m_can_do();
while(true)
{
if(1 == does)
{
manage_class();
does = m_can_do();
}
if(2 == does)
{
manage_stu();
does = m_can_do();
}
if(3 == does)
{
find();
does = m_can_do();
}
if(4 == does)
{
exit(0);
}
}
return 0;
}
/****************************************************函數***********************************/
void welcome()
{
printf("歡迎使用本學生管理系統。\n\n");
}
int check_key(char key[])
{
FILE * fp;
char right_key[20];
int result;
fp = fopen("key", "r");
fscanf(fp, "%s", right_key);
result = strcmp(key, right_key);
return result;
}
int m_can_do()
{
int d;
printf("您可以進行的操作為：\n\n");
printf("1 班級管理 2 學生管理 3 查詢 4 退出\n\n請輸入：");
scanf("%d", &d);
printf("\n\n");
while(1 != d && 2 != d && 3 != d && 4 != d)
{
printf("您的書有誤，請重新輸入：");
scanf("%d", &d);
printf("\n\n");
}
return d;
}
/************************************班級辦理部分***************************/
int m_class_can_do()
{
int d;
printf("請輸入您想要進行的操作：\n\n");
printf("1 添加班級 2 刪除班級 3 更改科目\n\n4 返回上一層 5 退出\n\n");
printf("請輸入：");
scanf("%d", &d);
printf("\n\n");
while(1 != d && 2 != d && 3 != d && 4 != d && 5 != d)
{
printf("您的輸入有誤，請重新輸入：");
scanf("%d", & d);
printf("\n\n");
}
return d;
}
void manage_class()
{
int does;
does = m_class_can_do();
while(true)
{
if(1 == does)
{
add_class();
does = m_class_can_do();
}
if(2 == does)
{
del_class();
does = m_class_can_do();
}
if(3 == does)
{
change_proj();
does = m_class_can_do();
}
if(4 == does)
{
return;
}
if(5 == does)
{
exit(0);
}
}
}
void add_class()
{
FILE * fp;
char name[20], name1[20];
printf("請輸入您想要添加的班級的名字：");
scanf("%s", name);
printf("\n\n");
while((fp = fopen(name, "r")))
{
fclose(fp);
printf("您輸入的班級已經存在，請重新輸入：");
scanf("%s", name);
printf("\n\n");
}
// fclose(fp);
sprintf(name1, "%s_score", name);
fp = fopen(name, "w");
fclose(fp);
fp = fopen(name1, "w");
fclose(fp);
printf("\n\n");
printf("*************************************************************\n");
printf(" 班級添加成功。 \n");
printf("**************************************************************\n");
}
void del_class()
{
FILE * fp;
char name[20], name1[20];
printf("請輸入您想刪除的班級名：");
scanf("%s", name);
printf("\n\n");
while(!(fp = fopen(name, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", name);
printf("\n\n");
}
fclose(fp);
sprintf(name1, "%s_score", name);
remove(name);
remove(name1);
printf("**************************************************************\n");
printf(" 班級刪除成功。 \n");
printf("**************************************************************\n\n");
}
void change_proj()
{
FILE * fp;
char proj[6][20];
printf("現在的科目信息為：\n\n");
fp = fopen("proj", "r");
fscanf(fp, "%s%s%s%s%s%s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
//fclose(fp);
// fclose(fp);
printf("%s %s %s %s %s %s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
printf("\n\n");
printf("請輸入您修改後的科目：\n\n");
//getchar();
scanf( "%s%s%s%s%s%s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
printf("\n\n");
fp = fopen("proj", "w");
fprintf(fp, "%s %s %s %s %s %s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
fclose(fp);
printf("**************************************************************\n");
printf(" 科目修改成功。 \n");
printf("**************************************************************\n\n");
}
/**************************************************************************學生管理***********************************/
int m_stu_can_do()
{
int d;
printf("您可以進行的操作有：\n\n");
printf("1 登記 2 修改 3 刪除某個學生 4 刪除某班學生\n\n5 登記分數 6 修改分數 7 返回上一層\n\n8 退出\n\n");
printf("請您輸入：");
scanf("%d", &d);
printf("\n\n");
while(1 != d && 2 != d && 3 != d && 4 != d && 5 != d && 6 != d && 7 != d)
{
printf("您的輸入有誤，請重新輸入：");
scanf("%d", &d);
printf("\n\n");
}
return d;
}
void manage_stu()
{
int does;
does = m_stu_can_do();
while(true)
{
if(1 == does)
{
log_stu();
does = m_stu_can_do();
}
if(2 == does)
{
change_stu();
does = m_stu_can_do();
}
if(3 == does)
{
del_stu();
does = m_stu_can_do();
}
if(4 == does)
{
del_clas_stu();
does = m_stu_can_do();
}
if(5 == does)
{
log_score();
does = m_stu_can_do();
}
if(6 == does)
{
change_score();
does = m_stu_can_do();
}
if(7 == does)
{
return;
}
if(8 == does)
{
exit(0);
}
}
}
void log_stu()
{
FILE * fp, * p;
char clas[20], clas1[20];
stu1 add[200];
int i = 0;
printf("請輸入您所要添加學生所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
sprintf(clas1, "%s_score", clas);
printf("請按下面提示輸入(輸入0結束)：\n\n");
printf("學號 姓名 性別 年齡 電話\n\n");
scanf("%d", & add[i]. num);
while(add[i]. num != 0)
{
scanf("%s%s%s%s", add[i]. name, add[i]. sex, add[i]. age, add[i]. phone);
i ++;
printf("\n");
scanf("%d", & add[i]. num);
}
i = 0;
fp = fopen(clas, "a");
p = fopen(clas1, "a");
while(add[i]. num != 0)
{
fprintf(fp, "%d %s %s %s %s\n\n", add[i]. num, add[i]. name, add[i]. sex, add[i]. age, add[i]. phone);
fprintf(p, "0 0 0 0 0 0\n\n");
i++;
}
fclose(fp);
fclose(p);
printf("**************************************************************\n");
printf(" 添加成功。 \n");
printf("**************************************************************\n\n");
}
void change_stu()
{
FILE * fp;
char clas[20];
int num, result, i;
stu1 stu[200];
//sstu2 stud[200];
printf("請輸入他所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
// sprintf(clas1"%s_score", clas);
read_stu1(clas, stu);
//read_stud(cls1, stud);
printf("請輸入該學生學號：");
scanf("%d", &num);
printf("\n\n");
result = find_stu(stu, num);
if(-1 == result)
{
printf("您輸入的學生不存在，請重新輸入：");
scanf("%d", & num);
printf("\n\n");
result = find_stu(stu, num);
}
printf("請按下面格式重新輸入該學生信息：\n\n");
printf("學號 姓名 性別 年齡 電話\n\n");
scanf("%d%s%s%s%s", & stu[result]. num, stu[result]. name, stu[result]. sex, stu[result]. age, stu[result]. phone);
i = 0;
fp = fopen(clas, "w");
while(0 != stu[i]. num)
{
fprintf(fp, "%d %s %s %s %s\n\n", stu[i]. num, stu[i]. name, stu[i]. sex, stu[i]. age, stu[i]. phone);
i++;
}
fclose(fp);
printf("**************************************************************\n");
printf(" 修改成功。 \n");
printf("**************************************************************\n\n");
}
void read_stu1(char clas[], stu1 stu[])
{
int i = 0;
FILE * fp;
fp = fopen(clas, "r");
while(!feof(fp))
{
fscanf(fp, "%d%s%s%s%s", &stu[i]. num, stu[i]. name, stu[i]. sex, stu[i]. age, stu[i]. phone);
i++;
}
fclose(fp);
stu[i-1]. num = 0;
}
int find_stu(stu1 stu[], int num)
{
int i = 0;
while(stu[i]. num != 0)
{
if(stu[i]. num == num)
{
break;
}
i++;
}
if(stu[i]. num == num)
{
return i;
}
else
{
return -1;
}
}
void del_stu()
{
FILE * fp, * p;
char clas[20], clas1[20];
int num, result, i = 0;
stu1 stu[200];
stu2 stud[200];
printf("請輸入他所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
sprintf(clas1, "%s_score", clas);
read_stu1(clas, stu);
read_stu2(clas1, stud);
printf("請輸入該學生學號：");
scanf("%d",& num);
printf("\n\n");
result = find_stu(stu, num);
if(-1 == result)
{
printf("您輸入的學生不存在，請重新輸入：");
scanf("%d", & num);
printf("\n\n");
result = find_stu(stu, num);
}
fp = fopen(clas, "w");
p = fopen(clas1, "w");
while(stu[i]. num != 0)
{
if(stu[i]. num == num)
{
i++;
}
if(stu[i]. num != 0)
{
fprintf(fp, "%d %s %s %s %s\n\n", stu[i]. num, stu[i]. name, stu[i]. sex, stu[i]. age, stu[i]. phone);
fprintf(p, "%d %d %d %d %d %d\n\n", stud[i]. proj1, stud[i]. proj2, stud[i]. proj3, stud[i]. proj4, stud[i]. proj5, stud[i]. proj6);
i++;
}
}
fclose(fp);
fclose(p);
printf("**************************************************************\n");
printf(" 刪除成功。 \n");
printf("**************************************************************\n\n");
}
void read_stu2(char clas1[], stu2 stud[])
{
int i = 0;
FILE * fp;
fp = fopen(clas1, "r");
while(!feof(fp))
{
fscanf(fp, "%d%d%d%d%d%d",&stud[i]. proj1, &stud[i]. proj2, &stud[i]. proj3, &stud[i]. proj4, &stud[i]. proj5, &stud[i]. proj6);
i++;
}
stud[i-1]. proj1 = -1;
fclose(fp);
}
void log_score()
{
FILE * fp, * p, * tp;
stu1 stu[200];
stu2 stud;
char clas[20], clas1[20], proj[6][20];
int i = 0;
printf("請輸入要登分的班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
tp = fopen("proj", "r");
fscanf(tp, "%s%s%s%s%s%s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
fclose(tp);
sprintf(clas1, "%s_score", clas);
read_stu1(clas, stu);
fp = fopen(clas, "r");
p = fopen(clas1, "w");
printf("請輸入：\n\n");
printf("學號 姓名 %s %s %s %s %s %s\n\n", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
while(0 != stu[i]. num)
{
printf("%d %s ", stu[i]. num, stu[i]. name);
scanf("%d%d%d%d%d%d", &stud. proj1, &stud. proj2, &stud. proj3, &stud. proj4, &stud. proj5, &stud. proj6);
fprintf(p, "%d %d %d %d %d %d\n\n", stud.proj1 ,stud.proj2 ,stud.proj3 ,stud.proj4 ,stud.proj5 ,stud.proj6);
i++;
}
fclose(fp);
fclose(p);
printf("**************************************************************\n");
printf(" 該班所有學生成績已登記完畢。 \n");
printf("**************************************************************\n\n");
}
void change_score()
{
FILE * fp, * temp;
char clas[20], clas1[20], proj[6][20];
int num, result, i = 0;
stu1 stu[200];
stu2 stud[200];
printf("請輸入他所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
sprintf(clas1, "%s_score", clas);
read_stu1(clas, stu);
//read_stu2(cls1, stud);
printf("請輸入該學生學號：");
scanf("%d",& num);
printf("\n\n");
result = find_stu(stu, num);
if(-1 == result)
{
printf("您輸入的學生不存在，請重新輸入：");
scanf("%d", & num);
printf("\n\n");
result = find_stu(stu, num);
}
temp = fopen("proj", "r");
fscanf(temp, "%s%s%s%s%s%s", proj[1], proj[2], proj[3], proj[4], proj[5], proj[6]);
fclose(temp);
fp = fopen(clas1, "w");
printf("請輸入：\n\n");
printf("學號 姓名 %s %s %s %s %s %s", proj[1], proj[2], proj[3], proj[4], proj[5], proj[6]);
printf("%d %s ", stu[result]. num, stu[result]. name);
scanf("%d%d%d%d%d%d", &stud[result]. proj1, &stud[result]. proj2, &stud[result]. proj3, &stud[result]. proj4, &stud[result]. proj5, &stud[result]. proj6);
while(0 != stud[i]. proj1)
{
fprintf(fp,"%d %d %d %d %d %d\n\n", stud[i]. proj1, stud[i]. proj2, stud[i]. proj3, stud[i]. proj4, stud[i]. proj5, stud[i]. proj6);
i++;
}
printf("**************************************************************\n");
printf(" 成績修改成功。 \n");
printf("**************************************************************\n\n");
}
void del_clas_stu()
{
FILE * fp;
char clas[20], clas1[20];
printf("請輸入您想要操作的班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("不存在%s班，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
sprintf(clas1, "%s_score", clas);
fp = fopen(clas, "w");
fclose(fp);
fp = fopen(clas1, "w");
fclose(fp);
printf("*************************************************************\n");
printf(" 刪除成功。 \n");
printf("*************************************************************\n\n");
}
/**********************************************查詢**********************************************************/
int m_find_can_do()
{
int d;
printf("您可以進行的操作為：\n\n1 查看某班基本信息 2 查看某班成績 3 查看學生基本信息\n\n4 查看學生全部信息 5 返回上一層 6 退出\n\n請您輸入：");
scanf("%d", &d);
printf("\n\n");
while(1 != d && 1 != d && 2 != d && 3 != d && 4 != d && 5 != d && 6 != d)
{
printf("您的輸入有誤，請重新輸入：");
scanf("%d", &d);
printf("\n\n");
}
return d;
}
void find()
{
int does;
does = m_find_can_do();
while(true)
{
if(1 == does)
{
find_clas_basic();
does = m_find_can_do();
}
if(2 == does)
{
find_clas_score();
does = m_find_can_do();
}
if(3 == does)
{
find_stu_basic();
does = m_find_can_do();
}
if(4 == does)
{
find_stu_all();
does = m_find_can_do();
}
if(5 == does)
{
return ;
}
if(6 == does)
{
exit(0);
}
}
}
void find_clas_basic()
{
FILE * fp;
stu1 stu[200];
char clas[20];
int i = 0, d;
printf("請輸入您想要查看的班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fscanf(fp, "%d", &d);
if(feof(fp))
{
printf("**************************************************************\n");
printf(" 您查看的班級沒有學生。 \n");
printf("**************************************************************\n");
fclose(fp);
return ;
}
read_stu1(clas, stu);
printf("學號 姓名 性別 年齡 電話\n\n");
while(0 != stu[i]. num)
{
printf("%d %s %s %s %s\n\n", stu[i]. num, stu[i]. name, stu[i]. sex, stu[i]. age, stu[i]. phone);
i++;
}
}
void find_clas_score()
{
FILE * fp, * temp;
stu1 stu[200];
stu2 stud[200];
char clas[20], clas1[20], proj[6][20];
int i = 0, d;
printf("請輸入您想要查看的班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fscanf(fp, "%d", &d);
if(feof(fp))
{
printf("**************************************************************\n");
printf(" 您查看的班級沒有學生。 \n");
printf("**************************************************************\n\n");
fclose(fp);
return ;
}
fclose(fp);
sprintf(clas1, "%s_score", clas);
read_stu1(clas, stu);
read_stu2(clas1, stud);
temp = fopen("proj", "r");
fscanf(temp, "%s%s%s%s%s%s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
fclose(temp);
printf("學號 姓名 %s %s %s %s %s %s\n\n", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
while(0 != stu[i]. num)
{
printf("%d %s ", stu[i]. num, stu[i]. name);
printf("%d %d %d %d %d %d\n\n", stud[i].proj1, stud[i].proj2, stud[i].proj3, stud[i].proj4, stud[i].proj5, stud[i].proj6);
i++;
}
}
void find_stu_basic()
{
stu1 stu[200];
int result, num;
char clas[20];
FILE * fp;
printf("請輸入他所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
read_stu1(clas, stu);
printf("請輸入該學生學號：");
scanf("%d", & num);
printf("\n\n");
result = find_stu(stu, num);
while(-1 == result)
{
printf("該學生不存在，請重新輸入：");
scanf("%d", &num);
printf("\n\n");
}
printf("該學生信息為：\n\n學號 姓名 性別 年齡 電話\n\n");
printf("%d %s %s %s %s\n\n", stu[result]. num, stu[result]. name, stu[result]. sex, stu[result]. age, stu[result]. phone);
}
void find_stu_all()
{
stu1 stu[200];
stu2 stud[200];
int result, num;
char clas[20], clas1[20], proj[6][20];
FILE * fp, * temp;
printf("請輸入他所在班級：");
scanf("%s", clas);
printf("\n\n");
while(!(fp = fopen(clas, "r")))
{
printf("您輸入的班級不存在，請重新輸入：");
scanf("%s", clas);
printf("\n\n");
}
fclose(fp);
sprintf(clas1, "%s_score", clas);
read_stu1(clas, stu);
read_stu2(clas1, stud);
printf("請輸入該學生學號：");
scanf("%d", & num);
printf("\n\n");
result = find_stu(stu, num);
while(-1 == result)
{
printf("該學生不存在，請重新輸入：");
scanf("%d", &num);
printf("\n\n");
}
temp = fopen("proj", "r");
fscanf(temp, "%s%s%s%s%s%s", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
fclose(temp);
printf("該學生全部信息如下：\n\n");
printf("該學生信息為：\n\n學號 姓名 性別 年齡 電話\n\n");
printf("%d %s %s %s %s\n\n", stu[result]. num, stu[result]. name, stu[result]. sex, stu[result]. age, stu[result]. phone);
printf("成績:\n\n");
printf("%s %s %s %s %s %s\n\n", proj[0], proj[1], proj[2], proj[3], proj[4], proj[5]);
printf("%d %d %d %d %d %d\n\n", stud[result]. proj1, stud[result]. proj2, stud[result]. proj3, stud[result]. proj4, stud[result]. proj5, stud[result]. proj6);
}
④ 學生成績管理系統C語言代碼
#include"stdio.h"
#include<string.h>
#include<stdlib.h>
#define N 30
struct student
{
int num;
char name[20];
int age;
int Math;
int English;
int Physical;
long int sum;
}stu[N];
enter()
{int i,n;
printf("How many students(1-%d)?:",N);
scanf("%d",&n);
printf("\nEnter data now\n\n");
for(i=0;i<n;i++)
{printf("\n Input %dth student record.\n",i+1);
input(i);
}
if(i!=0) save(n);
printf_back(); /* browse or back */
}
add()
{int i,n,m,k;
FILE *fp;
n=load();
printf("How many students are you want to add(1-%d)?:",N-n);
scanf("%d",&m);
k=m+n;
for(i=n;i<k;i++)
{printf("\n Input %dth student record.\n",i+1);
input(i);
}
if((fp=fopen("score.txt","ab"))==NULL)
{printf("Cannot open file.\n");
}
for(i=n;i<k;i++)
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
printf("file write error.\n");
fclose(fp);
printf_back();
}
/* insert()
{int n,c;
struct student s;
n=load();
puts("\n Input one data.\n");
do
{input(n);
printf_face();
printf_one(n);
printf("\n\nAre you sure?\n\n\t 1.Sure\t2.cancel and again\t3.Back without save [ ]\b\b");
scanf("%d",&c);
if(c==1)
{
save(n+1);
printf_back();
}
else if(c!=2) menu();
}
while(c==2);
} */
modify()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073- which needed modify.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to modify! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
w1=modify_data(k,n);
if(w1==1)
{printf("\nSuccessful ^_^.\n\nAre you modify another?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n); /* w0!=1 return w2==1 modify */
}
while(w0==1);
menu();
}
delete()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073- which needed delete.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to delete! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
printf("\nAre you sure?\n\n\t1.Sure2.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
if(w1==1)
{
stu[k].sum=0;
printf("\nSuccessful ^_^.\n\nAre you delete another?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n);
}
while(w0==1);
menu();
}
modify_score()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073 which score needed modify.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to modify! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
w1=modify_score1(k);
if(w1==1)
{printf("\nSuccessful ^_^.\n\nAre you modify another score?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n); /* w0!=1 return w2==1 modify */
}
while(w0==1);
menu();
}
order()
{int i,j,k,n;
struct student s;
n=load();
for(i=0;i<n-1;i++)
{k=i;
for(j=i+1;j<n;j++)
if(stu[j].num<stu[k].num) k=j;
s=stu[i];stu[i]=stu[k];stu[k]=s;
}
save(n);
puts("\n\n");
printf_back();
}
browse()
{int i,j,n;
n=load();
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nPass any key to contiune ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
printf("\tThere are %d record.\n",n);
printf("\nPass any key to back...");
getch();
menu();
}
save(int n)
{FILE *fp;
int i;
if((fp=fopen("score.txt","wb"))==NULL)
{printf("\nCannot open file\n");
return NULL;
}
for(i=0;i<n;i++)
if(stu[i].sum!=0)
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
printf("file write error\n");
fclose(fp);
}
load()
{FILE *fp;
int i;
if((fp=fopen("score.txt","rb"))==NULL)
{printf("\nCannot open file\n");
return NULL;
}
for(i=0;!feof(fp);i++)
fread(&stu[i],sizeof(struct student),1,fp);
fclose(fp);
return(i-1);
}
no_input(int i,int n)
{int k,w1;
do
{w1=0;
printf("NO.:031073-");
scanf("%d",&stu[i].num);
if(stu[i].num<1 || stu[i].num>N)
{puts("Input error! Only be made up of(1-N).Please reinput!\n");
w1=1;
}
if(w1!=1)
for(k=0;k<n;k++)
if(k!=i&&(stu[k].num==stu[i].num))
{puts("This record is exist. Please reinput!\n");
w1=1;break;
}
}
while(w1==1);
}
enter_score(int i)
{printf("Math English Physical");
scanf("%d %d %d",&stu[i].Math,&stu[i].English,&stu[i].Physical);
}
sum(int i)
{
stu[i].sum=stu[i].Math+stu[i].English+stu[i].Physical;
}
input(int i)
{no_input(i,i);
printf("name: age:");
scanf("%s %d",stu[i].name,&stu[i].age);
enter_score(i);
sum(i);
}
modify_score1(int i)
{int c,w1;
do
{
puts("\nmodify by=>\n\n 1.Math 2.English 3.Physical4.all score 5.cancel and back");
printf("Which you needed?:[ ]\b\b");
scanf("%d",&c);
if(c>5||c<1)
{puts("\nChoice error! Please again!");
getchar();
}
}
while(c>5||c<1);
do
{switch(c)
{
case 1:printf("Math:");scanf("%d",&stu[i].Math);break;
case 2:printf("English:");scanf("%d",&stu[i].English);break;
case 3:printf("Physical:");scanf("%d",&stu[i].Physical);break;
case 4:enter_score(i);break;
case 5:break;
}
if(c>0&&c<5) sum(i);
puts("\nNow:\n");
printf_face();
printf_one(i);
printf("\nAre you sure?\n\n\t1.Sure 2.No and remodify3.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
}
while(w1==2);
return(w1);
}
modify_data(int i,int n)
{int c,w1;
do
{
puts("\nmodify by=>\n\n 1.NO. 2.name 3.age 4.Math 5.English 6.Physical7.all score 8.all data 9.cancel and back");
printf("Which you needed?:[ ]\b\b");
scanf("%d",&c);
if(c>9||c<1)
{puts("\nChoice error! Please again!");
getchar();
}
}
while(c>9||c<1);
do
{switch(c)
{case 1:no_input(i,n);break;
case 2:printf("name:");scanf("%s",stu[i].name);break;
case 3:printf("age:");scanf("%d",&stu[i].age);break;
case 4:printf("Math:");scanf("%d",&stu[i].Math);break;
case 5:printf("English:");scanf("%d",&stu[i].English);break;
case 6:printf("Physical:");scanf("%d",&stu[i].Physical);break;
case 7:enter_score(i);break;
case 8:input(i);break;
case 9:break;
}
if(c>3&&c<8) sum(i);
puts("\nNow:\n");
printf_face();
printf_one(i);
printf("\nAre you sure?\n\n\t1.Sure 2.No and remodify3.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
}
while(w1==2);
return(w1);
}
printf_face()
{printf("\nNO.031073 name age Math English Physical sum\n");
}
printf_one(int i)
{
printf("%6d %8s %4d",stu[i].num,stu[i].name,stu[i].age);
printf("%5d %5d %8d %10d",stu[i].Math,stu[i].English,stu[i].Physical,stu[i].sum);
}
printf_back()
{int k,w;
printf("\n\n\tSuccessful.^_^\n\n");
printf("What do you want to do?\n\n\t1.Browse all now\t2.Back:[ ]\b\b");
scanf("%d",&w);
if(w==1) browse();
else menu();
}
menu()
{int w1;
char n;
do
{
puts("\t\t****************MENU****************\n\n");
puts("\t\t\t\tA.Enter new data");
puts("\t\t\t\tB.Addition data");
puts("\t\t\t\tC.Modify data");
puts("\t\t\t\tD.Delete data");
puts("\t\t\t\tE.Modify score");
puts("\t\t\t\tF.Order by number");
puts("\t\t\t\tG.Browse all");
puts("\t\t\t\tH.Exit");
puts("\n\n\t\t************************************\n");
printf("Choice your number(A-H):[ ]\b\b");
n=getchar();
printf("\n");
if(n<'A'||n>'H')
w1=1;
else w1=0;
}
while(w1==1);
switch(n)
{case 'A':enter();break;
case 'B':add();break;
case 'C':modify();break;
case 'D':delete();break;
case 'E':modify_score();break;
case 'F':order();break;
case 'G':browse();break;
case 'H':exit(0);
}
}
char password[7]="123456";
main()
{
char s[7];
printf("\t\t請輸入密碼:\n\t\t\n\t\t");
scanf("%s",s);
if(!strcmp(s,password))
{
printf("\n\t\t恭喜你進入學生成績管理系統\n");
menu();
}
else
{
printf("\t\t 密碼錯誤\n\n");
main();
}
}
⑤ 學生成績管理系統C語言編程
||#include<stdio.h> /*引用庫函數*/
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
typedef struct /*定義結構體數組*/
{
char num[10]; /*學號*/
char name[20]; /*姓名*/
int score; /*成績*/
}Student;
Student stu[80]; /*結構體數組變數*/
int menu_select() /*菜單函數*/
{
char c;
do{
system("cls"); /*運行前清屏*/
printf("\t\t****Students' Grade Management System****\n"); /*菜單選擇*/
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Query |\n");
printf("\t\t | 7. Statistic |\n");
printf("\t\t | 8. Add Records from a Text File|\n");
printf("\t\t | 9. Write to a Text file |\n");
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-9):");
c=getchar(); /*讀入選擇*/
}while(c<'0'||c>'9');
return(c-'0'); /*返回選擇*/
}
int Input(Student stud[],int n) /*輸入若干條記錄*/
{int i=0;
char sign,x[10]; /*x[10]為清除多餘的數據所用*/
while(sign!='n'&&sign!='N') /*判斷*/
{ printf("\t\t\tstudent's num:"); /*交互輸入*/
scanf("\t\t\t%s",stud[n+i].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x); /*清除多餘的輸入*/
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign); /*輸入判斷*/
i++;
}
return(n+i);
}
void Display(Student stud[],int n) /*顯示所有記錄*/
{
int i;
printf("\t\t\t-----------------------------------\n"); /*格式頭*/
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++) /*循環輸入*/
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0) /*每十個暫停*/
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n) /*按學號排序*/
{ int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n) /*插入一條記錄*/
{char x[10]; /*清除多餘輸入所用*/
printf("\t\t\tstudent's num:"); /*互動式輸入*/
scanf("\t\t\t%s",stud[n].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n); /*調用排序函數*/
printf("\t\t\tInsert Successed!\n"); /*返回成功信息*/
return(n);
}
int Delete_a_record(Student stud[],int n) /*按姓名查找，刪除一條記錄*/
{ char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:"); /*互動式問尋*/
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判斷*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*返回失敗信息*/
return(n);
}
for(j=i;j<n-1;j++) /*刪除操作*/
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n"); /*返回成功信息*/
return(n-1);
}
void Query_a_record(Student stud[],int n) /*查找並顯示一個記錄*/
{ char s[20];
int i=0;
printf("\t\t\tinput his(her) name:"); /*互動式輸入*/
scanf("\t\t\t%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判斷*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*輸入失敗信息*/
return;
}
printf("\t\t\this(her) number:%s\n",stud[i].num); /*輸出該學生信息*/
printf("\t\t\this(her) score:%d\n",stud[i].score);
}
void Statistic(Student stud[],int n) /*新增功能，輸出統計信息*/
{ int i,j=0,k=0,sum=0;
float aver; /*成績平均值*/
for(i=0;i<n;i++) /*循環輸入判斷*/
{
sum+=stud[i].score;
if(stud[j].score>stud[i].score) j=i;
if(stud[k].score<stud[i].score) k=i;
}
aver=1.0*sum/n;
printf("\t\t\tthere are %d records.\n",n); /*總共記錄數*/
printf("\t\t\tthe hignest score:\n"); /*最高分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\tthe lowest score:\n"); /*最低分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[k].num,stud[k].name,stud[k].score);
printf("\t\t\tthe average score is %5.2f\n",aver); /*平均分*/
}
int AddfromText(Student stud[],int n) /*從文件中讀入數據*/
{ int i=0,num;
FILE *fp; /*定義文件指針*/
char filename[20]; /*定義文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*輸入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打開文件*/
{ printf("\t\t\tcann't open the file\n"); /*打開失敗信息*/
printf("\t\t\t");
system("pause");
return(n);
}
fscanf(fp,"%d",&num); /*讀入總記錄量*/
while(i<num) /*循環讀入數據*/
{
fscanf(fp,"%s%s%d",stud[n+i].num,stud[n+i].name,&stud[n+i].score);
i++;
}
n+=num;
fclose(fp); /*關閉文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(n);
}
void WritetoText(Student stud[],int n) /*將所有記錄寫入文件*/
{
int i=0;
FILE *fp; /*定義文件指針*/
char filename[20]; /*定義文件名*/
printf("\t\t\tWrite Records to a Text File\n"); /*輸入文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename);
if((fp=fopen(filename,"w"))==NULL) /*打開文件*/
{
printf("\t\t\tcann't open the file\n");
system("pause");
return;
}
fprintf(fp,"%d\n",n); /*循環寫入數據*/
while(i<n)
{
fprintf(fp,"%-16s%-15s%d\n",stud[i].num,stud[i].name,stud[i].score);
i++;
}
fclose(fp); /*關閉文件*/
printf("Successed!\n"); /*返回成功信息*/
}
void main() /*主函數*/
{
int n=0;
for(;;)
{
switch(menu_select()) /*選擇判斷*/
{
case 1:
printf("\t\t\tInput Records\n"); /*輸入若干條記錄*/
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n"); /*顯示所有記錄*/
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n); /*按學號排序*/
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n); /*插入一條記錄*/
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n); /*按姓名查找，刪除一條記錄*/
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tQuery\n");
Query_a_record(stu,n); /*查找並顯示一個記錄*/
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tStatistic\n");
Statistic(stu,n); /*新增功能，輸出統計信息*/
printf("\t\t\t");
system("pause");
break;
case 8:
printf("\t\t\tAdd Records from a Text File\n");
n=AddfromText(stu,n); /*新增功能，輸出統計信息*/
break;
case 9:
printf("\t\t\tWrite to a Text file\n");
WritetoText(stu,n); /*循環寫入數據*/
printf("\t\t\t");
system("pause");
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n"); /*結束程序*/
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
四、函數調用關系圖
註：「→」代表調用
Input函數
列印鏈表記錄
Display函數
輸入若干條記錄
menu_select()函數
選擇菜單
Sort_by_num函數
顯示所有記錄
Delete_a_record函數
按姓名查找，刪除一條記錄
Query_a_record查找並顯示一條記錄
Statistic函數
輸出統計信息 （新增）
AddfromText函數
從正文中添加數據到結構體數組中
Main函數
Insert_a_record插入一條記錄
WritetoText函數 將所有數據寫入文件中
退出程序
Reverse(head)函數
按學號排序
五、設計測試流程
1、進入界面
2、輸入選項1，回車；
按提示輸入數據：
3、回到主菜單；
輸入選項7，回車；
輸入文件名：data.txt，回車；
出現成功提示，則讀入文件操作成功。
4、回到主菜單，輸入2，回車
每10個暫停顯示數據
5、回到主菜單，輸入3，回車
出現排序成功信息。
6、回到主菜單，輸入4，回車
按提示插入一組數據
7、回到主菜單，輸入5，回車
按提示輸入姓名，刪除數據
出現刪除成功的信息
8、回到主菜單，輸入6，回車
輸入姓名進行查詢
9、回到主菜單，輸入7，回車
出現統計信息
10、回到主菜單，輸入9，回車
輸入result.txt，回車
出現成功寫入文件的信息
11、回到主菜單，輸入0，回車退出系統
回答者：kingkey001 - 試用期 一級 7-14 22:38
修改答復： kingkey001，您要修改的答復如下: 積分規則 關閉
C語言課程設計報告-------學生成績簡單管理程序
一、系統菜單的主要功能
（1）輸入若干條記錄
（2）顯示所有記錄
（3）按學號排序
（4）插入一條記錄
（5）按姓名查找，刪除一條記錄
（6）查找並顯示一條記錄
（7）輸出統計信息 （新增）
（8）從正文中添加數據到結構體數組中
（9）將所有數據寫入文件中
（0）退出程序
二、題目分析
該題主要考察學生對結構體，指針，文件的操作，以及C語言演算法的掌握,所以完成此道題目要求較強的設計能力，尤其是要有一種大局觀的意識。如何調程序也非常重要，通過這個程序可以學習到以前調試短程序沒有的的經驗。
菜單中的每一個選項都對應一個子程序，子程序的演算法幾乎囊獲了所有C語言學過的技巧，下面就各個子程序中的功能進行說明：
功能1和4的演算法相似，輸入一條記錄到結構體中去，其中有一部很關鍵，就是通過gets將所有的多餘的字元，回車讀去，否則就會出錯。
功能2是顯示所有的記錄，通過循環輸出，格式也比較重要。
功能3為按學號排序，因為學號定義成了字元數組的形式，因此在運用冒泡法進行排序的時候，要用到strcmp,strcpy等函數。
功能5為按姓名刪除記錄，先輸入姓名，再一一比較，如果沒有則返回失敗信息，如果找到就將此記錄都向前移一位，返回n-1。
功能6的演算法在5中就已經體現了，輸入姓名，一一比較。
功能7為新增的功能，因為考慮到原來給出的函數中竟然沒有對學生成績的統計功能，因此新增此功能，可以得出所有的記錄個數，最高、最低、平均分，並輸出相關的學生信息等。
功能8和9是對文件的操作，提前准備好數據。
三、程序正文部分
#include<stdio.h> /*引用庫函數*/
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
typedef struct /*定義結構體數組*/
{
char num[10]; /*學號*/
char name[20]; /*姓名*/
int score; /*成績*/
}Student;
Student stu[80]; /*結構體數組變數*/
int menu_select() /*菜單函數*/
{
char c;
do{
system("cls"); /*運行前清屏*/
printf("\t\t****Students' Grade Management System****\n"); /*菜單選擇*/
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Query |\n");
printf("\t\t | 7. Statistic |\n");
printf("\t\t | 8. Add Records from a Text File|\n");
printf("\t\t | 9. Write to a Text file |\n");
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-9):");
c=getchar(); /*讀入選擇*/
}while(c<'0'||c>'9');
return(c-'0'); /*返回選擇*/
}
int Input(Student stud[],int n) /*輸入若干條記錄*/
{int i=0;
char sign,x[10]; /*x[10]為清除多餘的數據所用*/
while(sign!='n'&&sign!='N') /*判斷*/
{ printf("\t\t\tstudent's num:"); /*交互輸入*/
scanf("\t\t\t%s",stud[n+i].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x); /*清除多餘的輸入*/
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign); /*輸入判斷*/
i++;
}
return(n+i);
}
void Display(Student stud[],int n) /*顯示所有記錄*/
{
int i;
printf("\t\t\t-----------------------------------\n"); /*格式頭*/
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++) /*循環輸入*/
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0) /*每十個暫停*/
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n) /*按學號排序*/
{ int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n) /*插入一條記錄*/
{char x[10]; /*清除多餘輸入所用*/
printf("\t\t\tstudent's num:"); /*互動式輸入*/
scanf("\t\t\t%s",stud[n].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n); /*調用排序函數*/
printf("\t\t\tInsert Successed!\n"); /*返回成功信息*/
return(n);
}
int Delete_a_record(Student stud[],int n) /*按姓名查找，刪除一條記錄*/
{ char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:"); /*互動式問尋*/
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判斷*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*返回失敗信息*/
return(n);
}
for(j=i;j<n-1;j++) /*刪除操作*/
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n"); /*返回成功信息*/
return(n-1);
}
void Query_a_record(Student stud[],int n) /*查找並顯示一個記錄*/
{ char s[20];
int i=0;
printf("\t\t\tinput his(her) name:"); /*互動式輸入*/
scanf("\t\t\t%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判斷*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*輸入失敗信息*/
return;
}
printf("\t\t\this(her) number:%s\n",stud[i].num); /*輸出該學生信息*/
printf("\t\t\this(her) score:%d\n",stud[i].score);
}
void Statistic(Student stud[],int n) /*新增功能，輸出統計信息*/
{ int i,j=0,k=0,sum=0;
float aver; /*成績平均值*/
for(i=0;i<n;i++) /*循環輸入判斷*/
{
sum+=stud[i].score;
if(stud[j].score>stud[i].score) j=i;
if(stud[k].score<stud[i].score) k=i;
}
aver=1.0*sum/n;
printf("\t\t\tthere are %d records.\n",n); /*總共記錄數*/
printf("\t\t\tthe hignest score:\n"); /*最高分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\tthe lowest score:\n"); /*最低分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[k].num,stud[k].name,stud[k].score);
printf("\t\t\tthe average score is %5.2f\n",aver); /*平均分*/
}
int AddfromText(Student stud[],int n) /*從文件中讀入數據*/
{ int i=0,num;
FILE *fp; /*定義文件指針*/
char filename[20]; /*定義文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*輸入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打開文件*/
{ printf("\t\t\tcann't open the file\n"); /*打開失敗信息*/
printf("\t\t\t");
system("pause");
return(n);
}
fscanf(fp,"%d",&num); /*讀入總記錄量*/
while(i<num) /*循環讀入數據*/
{
fscanf(fp,"%s%s%d",stud[n+i].num,stud[n+i].name,&stud[n+i].score);
i++;
}
n+=num;
fclose(fp); /*關閉文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(n);
}
void WritetoText(Student stud[],int n) /*將所有記錄寫入文件*/
{
int i=0;
FILE *fp; /*定義文件指針*/
char filename[20]; /*定義文件名*/
printf("\t\t\tWrite Records to a Text File\n"); /*輸入文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename);
if((fp=fopen(filename,"w"))==NULL) /*打開文件*/
{
printf("\t\t\tcann't open the file\n");
system("pause");
return;
}
fprintf(fp,"%d\n",n); /*循環寫入數據*/
while(i<n)
{
fprintf(fp,"%-16s%-15s%d\n",stud[i].num,stud[i].name,stud[i].score);
i++;
}
fclose(fp); /*關閉文件*/
printf("Successed!\n"); /*返回成功信息*/
}
void main() /*主函數*/
{
int n=0;
for(;;)
{
switch(menu_select()) /*選擇判斷*/
{
case 1:
printf("\t\t\tInput Records\n"); /*輸入若干條記錄*/
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n"); /*顯示所有記錄*/
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n); /*按學號排序*/
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n); /*插入一條記錄*/
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n); /*按姓名查找，刪除一條記錄*/
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tQuery\n");
Query_a_record(stu,n); /*查找並顯示一個記錄*/
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tStatistic\n");
Statistic(stu,n); /*新增功能，輸出統計信息*/
printf("\t\t\t");
system("pause");
break;
case 8:
printf("\t\t\tAdd Records from a Text File\n");
n=AddfromText(stu,n); /*新增功能，輸出統計信息*/
break;
case 9:
printf("\t\t\tWrite to a Text file\n");
WritetoText(stu,n); /*循環寫入數據*/
printf("\t\t\t");
system("pause");
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n"); /*結束程序*/
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
四、函數調用關系圖
註：「→」代表調用
Input函數
列印鏈表記錄
Display函數
輸入若干條記錄
menu_select()函數
選擇菜單
Sort_by_num函數
顯示所有記錄
Delete_a_record函數
按姓名查找，刪除一條記錄
Query_a_record查找並顯示一條記錄
Statistic函數
輸出統計信息 （新增）
AddfromText函數
從正文中添加數據到結構體數組中
Main函數
Insert_a_record插入一條記錄
WritetoText函數 將所有數據寫入文件中
退出程序
Reverse(head)函數
按學號排序
五、設計測試流程
1、進入界面
2、輸入選項1，回車；
按提示輸入數據：
3、回到主菜單；
輸入選項7，回車；
輸入文件名：data.txt，回車；
出現成功提示，則讀入文件操作成功。
4、回到主菜單，輸入2，回車
每10個暫停顯示數據
5、回到主菜單，輸入3，回車
出現排序成功信息。
6、回到主菜單，輸入4，回車
按提示插入一組
⑥ 學生成績管理系統c
#include "stdio.h"
#include<conio.h>
#include<string.h>
#include<stdlib.h>
struct book{
char number[21];
char shuming[30];
int shuliang;
int jiage;
char zhuanye[20];
char zuozhe[26];
char chubanshe[20];
char beizhu[100];
struct book *next;
};
struct book *creat() /*創建鏈表*/
{
struct book *p,*head,*end;
head=end=p=(struct book *)malloc(sizeof(struct book));
printf("輸入教材編號為0結束輸入，每項信息都必須輸入內容。\n");
do
{
printf("\n教材編號：");
gets(p->number);
if(strcmp(p->number,"0")==0){ end->next=NULL; return head;}
end=p;
printf("\n教材名稱：");
gets(p->shuming);
printf("\n教材數量：");
scanf("%d",&p->shuliang);
printf("\n教材價格：");
scanf("%d",&p->jiage);
getchar();
printf("\n教材專業：");
gets(p->zhuanye);
printf("\n教材作者：");
gets(p->zuozhe);
printf("\n教材出版社：");
gets(p->chubanshe);
printf("\n備注:");
gets(p->beizhu);
p=(struct book *)malloc(sizeof(struct book));
end->next=p;
}while(1);
}
void save(struct book *head) /*保存鏈表*/
{FILE *fp;
struct book *p;
char filename[30];
int ch;
printf("請輸入「文件名.後綴」：");
scanf("%s",filename);
if((fp=fopen(filename,"r"))!=NULL)
{
printf("\n該文件已存在，是否覆蓋？1，是 2，否");
scanf("%d",&ch);
if(ch!=1)
return;
}
if((fp=fopen(filename,"w"))==NULL) { printf("\n文件保存失敗");getchar();return;}
p=head;
do{
fprintf(fp,"\n%s",p->number);
fprintf(fp,"\n%s",p->shuming);;
fprintf(fp,"\n%d",p->shuliang);
fprintf(fp,"\n%d",p->jiage);
fprintf(fp,"\n%s",p->zhuanye);
fprintf(fp,"\n%s",p->zuozhe);
fprintf(fp,"\n%s",p->chubanshe);
fprintf(fp,"\n%s",p->beizhu);
p=p->next;
}while(p!=NULL);
fprintf(fp," over");
printf("\n成功保存");
getchar();
getchar();
fclose(fp);
}
void print(struct book *head) /*輸出鏈表*/
{
struct book *p;
p=head;
if(p==NULL) { printf("未打開任何文件，無法顯示"); getch();return;}
do{
printf("\n\n教材編號：%s",p->number);
printf("\n教材名稱：%s",p->shuming);;
printf("\n數量：%d",p->shuliang);
printf("\n價格：%d",p->jiage);
printf("\n專業：%s",p->zhuanye);
printf("\n作者：%s",p->zuozhe);
printf("\n出版社：%s",p->chubanshe);
printf("\n備註：%s",p->beizhu);
p=p->next;
}while(p!=NULL);
}
struct book *openfile() /*打開文件*/
{struct book *p,*f,*head;
FILE *fp;
char filename[20];
printf("\n請輸入路徑，文件名，和後綴）：");
scanf("%s",filename);
if((fp=fopen(filename,"r"))==NULL){ printf("\n文件找不到，請檢查是否有該文件和路徑是否正確");getchar();return NULL;}
head=f=p=(struct book *)malloc(sizeof(struct book));
fscanf(fp,"%s%s%d%d%s%s%s%s",p->number,p->shuming,&p->shuliang,&p->jiage,p->zhuanye,p->zuozhe,p->chubanshe,p->beizhu);
while(!feof(fp))
{ p=(struct book *)malloc(sizeof(struct book));
f->next=p;
fscanf(fp,"%s%s%d%d%s%s%s%s",p->number,p->shuming,&p->shuliang,&p->jiage,p->zhuanye,p->zuozhe,p->chubanshe,p->beizhu);
if(strcmp(p->number,"over")==0){ f->next=NULL; printf("\n文件打開成功，可以顯示此信息");getchar(); return head; }
f=p;
}
return head;
}
void namesort(struct book *head) /*按教材名稱排序*/
{ struct book *p,*t,*f,*h;
char ch[20];
int i;
h=t=f=p=head;
if(head==NULL) {printf("未打開任何文件");getchar();return; };
f=p->next;
for(p=head;p->next!=NULL;p=p->next)
{
for(t=head,f=t->next;t->next!=NULL;f=f->next,t=t->next)
{
if(strcmp(t->shuming,f->shuming)>0)
{
strcpy(ch,t->number );
strcpy(t->number,f->number);
strcpy(f->number,ch);
strcpy(ch,t->shuming );
strcpy(t->shuming,f->shuming);
strcpy(f->shuming,ch);
i=t->shuliang ;
t->shuliang=f->shuliang;
f->shuliang=i;
i=t->jiage ;
t->jiage=f->jiage;
f->jiage=i;
strcpy(ch,t->zhuanye);
strcpy(t->zhuanye,f->zhuanye);
strcpy(f->zhuanye,ch);
strcpy(ch,t->zuozhe);
strcpy(t->zuozhe,f->zuozhe);
strcpy(f->zuozhe,ch);
strcpy(ch,t->chubanshe);
strcpy(t->chubanshe,f->chubanshe);
strcpy(f->chubanshe,ch);
strcpy(ch,t->beizhu);
strcpy(t->beizhu,f->beizhu);
strcpy(f->beizhu,ch);
}
}
}
print(h);
}
void chubanshesort(struct book *head) /*按出版社排序*/
{ struct book *p,*t,*f,*h;
char ch[20];
int i;
h=t=f=p=head;
if(head==NULL) {printf("未打開任何文件");getchar();return; }
f=p->next;
for(p=head;p->next!=NULL;p=p->next)
{
for(t=head,f=t->next;t->next!=NULL;f=f->next,t=t->next)
{
if(strcmp(t->chubanshe,f->chubanshe)>0)
{
strcpy(ch,t->number );
strcpy(t->number,f->number);
strcpy(f->number,ch);
strcpy(ch,t->shuming );
strcpy(t->shuming,f->shuming);
strcpy(f->shuming,ch);
i=t->shuliang ;
t->shuliang=f->shuliang;
f->shuliang=i;
i=t->jiage ;
t->jiage=f->jiage;
f->jiage=i;
strcpy(ch,t->zhuanye);
strcpy(t->zhuanye,f->zhuanye);
strcpy(f->zhuanye,ch);
strcpy(ch,t->zuozhe);
strcpy(t->zuozhe,f->zuozhe);
strcpy(f->zuozhe,ch);
strcpy(ch,t->chubanshe);
strcpy(t->chubanshe,f->chubanshe);
strcpy(f->chubanshe,ch);
strcpy(ch,t->beizhu);
strcpy(t->beizhu,f->beizhu);
strcpy(f->beizhu,ch);
}
}
}
print(h);
}
void shumingsearch(struct book *head) /*按教材名稱查找*/
{ struct book *p;
char name[20];
int c;
if(head==NULL) {printf("未打開任何文件");getchar();return;}
printf("1，查找專業 2，查找教材名稱：");
scanf("%d",&c);
getchar();
if(c==2)
printf("請輸入要查找的教材名稱：");
else printf("請輸入要查找的專業：");
gets(name);
p=head;
do{ if(c==2)
if(strcmp(p->shuming,name)==0)
{
printf("教材編號：%s\n教材名稱：%s\n數量：%d\n價格：%d\n專業：%s\n作者：%s\n出版社：%s\n備註：%s\n",p->number,p->shuming,p->shuliang,p->jiage,p->zhuanye,p->zuozhe,p->chubanshe,p->beizhu);
}
if(c==1)
if(strcmp(p->zhuanye,name)==0)
{
printf("教材編號：%s\n教材名稱：%s\n數量：%d\n價格：%d\n專業：%s\n作者：%s\n出版社：%s\n備註：%s\n",p->number,p->shuming,p->shuliang,p->jiage,p->zhuanye,p->zuozhe,p->chubanshe,p->beizhu);
}
p=p->next;
}while(p!=NULL);
printf("查找完成");
return;
}
struct book *add(struct book *head) /*增加記錄*/
{ struct book *p,*e,*f,*h;
if(head==NULL) {printf("未打開任何文件");getchar(); return NULL;}
h=f=e=head;
p=(struct book *)malloc(sizeof(struct book));
printf("\n教材編號：");
gets(p->number);
printf("\n教材名稱：");
gets(p->shuming);
printf("\n數量：");
scanf("%d",&p->shuliang);
printf("\n價格：");
scanf("%d",&p->jiage);
getchar();
printf("\n專業：");
gets(p->zhuanye);
printf("\n作者：");
gets(p->zuozhe);
printf("\n出版社：");
gets(p->chubanshe);
printf("\n備注:");
gets(p->beizhu);
if(strcmp(f->number,p->number)>0) { p->next=f;h=p;printf("\n添加成功");return h;}
if(f->next==NULL) { f->next=p;p->next=NULL;printf("\n添加成功");return h;}
do{
if(f->next!=NULL)
if(strcmp(f->number,p->number)>0)
{
e->next=p;p->next=f;printf("\n添加成功");return h;
}
if(f->next==NULL)
{
f->next=p;
p->next=NULL;
printf("\n添加成功");
return h;
}
f=f->next;
e=e->next;
}while(1);
}
struct book *delet(struct book *head) /*刪除記錄*/
{ struct book *p,*e;
char num[20];
if(head==NULL) {printf("未打開任何文件");getchar();return NULL;}
printf("請輸入要刪除的教材編號：");
scanf("%s",num);
p=e=head;
if(strcmp(p->number,num)==0) { head=head->next; print(head);return head;}
else p=p->next;
do{
if(strcmp(p->number,num)==0)
{
if(p->next!=NULL)
e->next=p->next;
if(p->next==NULL) e->next=NULL;
print(head);
return head;
}
p=p->next;
e=e->next;
}while(p!=NULL);
printf("搜索完畢，未找到該記錄");
return head;
}
struct book *change(struct book *head) /*修改記錄*/
{ struct book *p;
char num[20];
if(head==NULL) {printf("未打開任何文件");getchar();return NULL;}
printf("請輸入要修改的教材編號：");
scanf("%s",num);
getchar();
p=head;
do{
if(strcmp(p->number,num)==0)
{
printf("教材編號：%s\n教材名稱：%s\n數量：%d\n價格：%d\n專業：%s\n作者：%s\n出版社：%s\n備註：%s\n",p->number,p->shuming,p->shuliang,p->jiage,p->zhuanye,p->zuozhe,p->chubanshe,p->beizhu);
printf("\n教材編號：");
gets(p->number);
printf("\n教材名稱：");
gets(p->shuming);
printf("\n數量：");
scanf("%d",&p->shuliang);
printf("\n價格：");
scanf("%d",&p->jiage);
getchar();
printf("\n專業：");
gets(p->zhuanye);
printf("\n作者：");
gets(p->zuozhe);
printf("\n出版社：");
gets(p->chubanshe);
printf("\n備注:");
gets(p->beizhu);
printf("修改成功");
return head;
}
p=p->next;
}while(p!=NULL);
printf("未找到要修改的記錄");
return head;
}
int mima()
{ FILE *fp;
char mima1[20],mima2[20];
if((fp=fopen("mima","r"))==NULL)
{ printf("尚未設置密碼請輸入：");
scanf("%s",mima1);
printf("請再次輸入密碼：");
scanf("%s",mima2);
if(strcmp(mima1,mima2)!=0) { printf("兩次密碼不一樣");return 0;}
else {
fp=fopen("mima","w");
fprintf(fp,"%s",mima1);
printf("密碼設置成功");
return 1;
}
}
printf("請輸入初始化密碼：");
scanf("%s",mima1);
fscanf(fp,"%s",mima2);
if(strcmp(mima1,mima2)==0)
{
printf("密碼正確");
printf("請輸入要刪除的文件名：");
scanf("%s",mima1);
if(remove(mima1)==0)
{
printf("刪除成功");
getchar();
return 1;
}
else {
printf("刪除失敗，請檢查是否存在該文件或路徑是否正確");
getchar();
return 0;
}
}
else {
printf("密碼錯誤");
getchar();
return 0;
}
}
void main()
{
struct book *head=NULL;
char i;
printf(" 88888888888 \n");
printf(" d88888888888b \n");
printf(" d88888 88888b \n");
printf(" d88P 88b \n");
printf(" 888' `88b \n");
printf(" 88P Y88 \n");
printf(" 88 88\n");
printf(" 88 88\n");
printf(" 88 88\n");
printf(" 88 88\n");
printf(" 88 88\n");
printf(" 88 ,aa. ,aa. 88 \n");
printf(" 88 d88b d88b 88 \n");
printf(" ,=88 Y88P Y88P 88=, \n");
printf(" ,d88P' `' _aa_ `' `Y88b, \n");
printf(" 88P' (8888) `Y88 ad88888b \n");
printf(" 88 ~^^~ 88 d88Y Y8b\n");
printf(" Yb._ _.d8 d8Y 88\n");
printf(" d88888888ba888=,. .,=8888 d88 88 \n");
printf(" ★☆88P Y88~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~★☆\n");
printf(" ★☆ 88 88 ★☆\n");
printf(" ★☆88 88 歡迎使用本教材系統,按任意鍵進入系統 ★☆\n");
printf(" ★☆ 8b,___,d8 ★☆\n");
printf(" ★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆★☆\n");
getch();
system("cls");
do{
printf(" ☆★☆★☆★ 教材管理系統 ☆★☆★☆★\n");
printf("m--菜單 h--幫助");
printf("\n請輸入命令:");
i=getch();
if(i=='h')
{ printf("\n1，錄入教材信息的時候，每一個項目都必須輸入相應的內容。\n2，修改，增加，刪除，查找記錄前必須先打開一個文件，修改完後必須記得保存教材信息。\n3,必須使用正確的路徑打開文件，建議保存文件時候不用輸入路徑（此時是默認路徑，即保存在程序目錄下。）");
getch();
break;
}
if(i=='m')
break;
system("cls");
}while(i!='m'||i!='h');
system("cls");
do{
printf(" ☆★☆★☆★ 教材管理系統 ☆★☆★☆★\n");
printf("┌————-———┐\n");
printf("│1，錄入教材信息│\n│2，顯示教材信息│\n│3，打開一個記錄│\n│4，編輯一個記錄│\n│5，保存教材信息│\n│6，查找記錄 │\n│s，初始化系統 │\n│e，退出系統 │\n");
printf("└———————-┘\n");
printf("\n請輸入功能編號：");
i=getch();
system("cls");
switch(i)
{
case '1': head=creat();save(head);break;
case '2': print(head);break;
case '3': head=openfile();break;
case '4': system("cls");
printf("┌————-———┐\n");
printf("│1，增加一個記錄│\n");
printf("│2，刪除一個記錄│\n");
printf("│3，修改一個記錄│\n");
printf("└———————-┘\n");
i=getch();
switch(i)
{
case '1':
head=add(head);break;
case '2':
head=delet(head);break;
case '3': head=change(head);break;
default: break;
}
break;
case '5': save(head);break;
case '6': shumingsearch(head);break;
case 's': mima();break;
case 'e': exit(0);
default :break;
}
system("cls");
}while(1);
}
我想這個程序包含了你那個成績管理系統的全部要求，但我這個是教材管理系統我想改一下就可以了，具體如何改就要看樓主的天賦咯，呵呵。參考一下吧
⑦ 學生成績管理系統c語言代碼
這個成績統計系統，不是1個小時就能寫完的。要佔用回答者數小時時間，不多給點金幣？或是其它的？
⑧ 學生成績管理系統(C語言）
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<windows.h>
#define NUM_SUBJECT 4
typedef struct zl
{
char no[5]; /*學號*/
char name[6]; /*姓名*/
int score[NUM_SUBJECT]; /*各門學科成績*/
float total; /*總分*/
float average; /*平均分*/
int order; /*名次*/
}STUDENT;
int REC_NUM=0; /*學生記錄數*/
char*subject[]={"數學","電腦","物理","電工學"};
char*menu[]={"**************MENU***************",
"1. Enter new record",
"2. Display record",
"3. Search record",
"4. Modify record",
"5. Delete a record to list",
"6. Add a record to list",
"7. Sort to make new file",
"8. Save the file",
"9. Load the file",
"10. Quit"};
STUDENT records[10];
void newRec();
void showTable();
void showTable2(Iint);
void display();
void searchRec();
void modifyRec();
void deleteRec();
void addRec();
void orderRec();
void sortRec();
void saveRec();
void loadRec();
void Rec(STUDENT*,STUDENT*);
void quit();
int menu_select();
int findRec(char*,int,int);
void main()
{
system("cls");
for(;;)
{
switch(menu_select())
{
case 1: newRec();break;
case 2: display();break;
case 3: searchRec();break;
case 4: modifyRec();break;
case 5: deleteRec();break;
case 6: addRec();break;
case 7: sortRec();break;
case 8: saveRec();break;
case 9: loadRec();break;
case 10: quit();
}
}
}
int menu_select()
{
char s[3];
int c,i;
for(i=0;i<11;i++)
{
printf("%s",menu[i]);
}
window(1,1,80,25);
do
{
printf(" Enter you choice(1-10):");
scanf("%s",s);
c=atoi(s);
}while(c<0||c>11);
return c;
}
void showTable1()
{
system("cls");
printf("*****************STUDENT INFORMATION****************");
printf("????D?D?D?D?D?D?D?D?D?D???\n");
printf("|Rec | No | Name | Computer | Physics | English | total | Average | Order\n");
printf("?¨¤?¨¤?¨¤?¨¤?¨¤?¨¤?¨¤?¨¨\n");
}
void showTable2(int n)
{
if(n==0)n=1;
if(REC_NUM==0)n=-1;
printf("??????????????????\n");
}
void quit()
{
char str[5];
printf("Save records?(Y/N)");
scanf("%s",str);
if(str[0]=='Y'||str[0]=='y')
saveRec();
exit(0);
}
void newRec()
{
int i, j, sum;
system("cls");
printf("Please input the REC_NUM:");
scanf("%d",&REC_NUM);
for(i=0;i<REC_NUM;i++)
{
system("cls");
sum=0;
for(j=0;j<NUM_SUBJECT;j++);
{
scanf("%d",&records[i].score[j]);
sum=sum+records[i].score[j];
}
records[i].total=sum;
records[i].average=records[i].total/NUM_SUBJECT;
records[i].order=0;
}
}
void display()
{
int i=0;
showTable1();
for(i=0;i<REC_NUM;i++)
{
printf("|%2d |%4s |6s?%4d | %4d | %4d | %5.1f | %5.1f | %2d \n",i+1,records[i].no,records[i].name,records[i].score[0],records[i].score[1],records[i].score[2],records[i].score[3],records[i].total,records[i].average,records[i].order);
}
showTable2(i);
printf("Press any key to return!");
getch();
}
void saveRec()
{
FILE*fp1,*fp2;
if((fp1=fopen("d:\\cjt\\tc\\lianxiti\\keshe\\keshe.dat","wb"))==NULL)
{
printf("Cannot open this file!");
exit(1);
}
if((fp2=fopen("d:\\cjt\\tc\\lianxiti\\keshe\\keshe.dat","wb"))==NULL)
{
printf("Cannot open this file!");
exit(1);
}
printf("\nSaving file......\n");
fwrite(&REC_NUM,sizeof(REC_NUM),1,fp2);
fwrite(records,sizeof(STUDENT),REC_NUM,fp1);
fclose(fp1);fclose(fp2);
printf("n\Save success!!\n");delay(1000);
printf("\nPress any key to return!");
getch();
}
void loadRec()
{
FILE*fp1,*fp2;
if((fp1=fopen("d:\\cjt\\tc\\lianxiti\\keshe\\keshe.dat","rb"))==NULL)
{
printf("Cannot open this file!");
exit(1);
}
if((fp2=fopen("d:\\cjt\\tc\\lianxiti\\keshe\\keshe.dat","rb"))==NULL)
{
printf("Cannot open this file!");
exit(1);
}
system("cls");
printf("\nLoading file.....\n");
fread(&REC_NUM,sizeof(REC_NUM),1,fp2);
fread(records,sizeof(STUDENT),REC_NUM,fp1);
fclose(fp1);fclose(fp2);
delay(2000);
printf("\nYou have success read date from file!!!\n");
printf("\press any key to return!");
getch();
}
void searchRec()
{
char str[20];
int i;
system("cls");
printf("Please input the number you want to get:");
scanf("%s",str);
i=findRec(str,1,0);
if(i!=-1)
{
printf("|%2d |%4s | 6s| %4d | %4d | %4d | %4d| %5.1f | %5.1f | %2d \n",i+1,records[i].no,records[i].name,records[i].score[0],records[i].score[1],records[i].score[2],records[i].score[3],records[i].total,records[i].average,records[i].order);
showTable2(0);
}
else printf("Not find!\n");
printf("Press any key to return!");
getch();
}
void deleteRec()
{
int i, j;
char str[20];
system("cls");
printf("Please input the number you want to delete:");
scanf("%S",str);
i=findRec(str,1,0);
for(j=i;j<REC_NUM;j++)
records[j]=records[j+1];
REC_NUM--;
saveRec();
}
void Rec(STUDENT*src,STUDENT*dest)
{
int i;
strcpy(dest->no,src->no);
strcpy(dest->name,src->name);
for(i=0;i<NUM_SUBJECT;i++)
dest->score[i]=src->score[i];
dest->total=src->total;
dest->average=src->average;
dest->order=src->order;
}
void orderRec()
{
int i;
records[0].order=1;
for(i=1;i<REC_NUM;i++)
if(records[i].total==records[i-1].total)
records[i].order=records[i-1].order;
else
records[i].order=i+1;
}
void sortRec()
{
int i,j,flag;
STUDENT t;
system("cls");
printf("\nsorting file\n");
for(i=0;i<REC_NUM;i++)
{
flag=0;
for(j=REC_NUM-1;j>i;j--)
if(records[j].total>records[j-1].total)
{
Rec(&records[j],&t);
Rec(&records[j-1],&records[j]);
Rec(&t,&records[j-1]);
flag=1;
}
if(!flag) break;
}
orderRec();
delay(2000);
printf("\nsorting success\n");
saveRec();
}
int findRec(char *target,int tarType,int from)
{
int i;
for(i=from;i<REC_NUM;i++)
{
if((tarType==1&&strcmp(target,records[i].no)==0)
||tarType==2&&strcmp(target,records[i].name)==0)
return(i);
}
return(-1);
}
void modifyRec()
{
int i,j,sum;
char no[20],str[8];
system("cls");
printf("Please input the number you want to modify:");
scanf("%s",no);
i=findRec(no,1,0);
showTable1();
printf("| %2d | %4s | 6s |%4d |%4d | %4d | %4d | %5.1f | %5.1f|%2d |\n",i+1,records[i].no,records[i].name,records[i].score[0],records[i].score[1],records[i].score[2],records[i].score[3],records[i].total,records[i].average,records[i].order);
showTable2(0);
printf("Do you wang to modify this student(Y/N):");
scanf("%s",str);
if(str[0]=='y'||str[0]=='Y')
{
printf("enter number:");scanf("%s",records[i].no);
printf("enter name:");scanf("%s",records[i].name);
sum=0;
for(j=0;j<NUM_SUBJECT;j++)
{
printf("%s:",subject[j]);
scanf("%d",&records[i].score[j]);
sum=sum+records[i].score[j];
}
records[i].total=sum;
records[i].average=records[i].total/NUM_SUBJECT;
records[i].order=0;
}
printf("Press any key to return!");
getch();
}
void addRec()
{
int i,j,sum=0;
char no[20],str[8];
for(;;)
{
system("cls");
printf("Please input the number you want to add:");
scanf("%s",str);
i=findRec(str,1,0);
if(i==-1)break;
else printf("This number is exist!\n");
getch();
}
strcpy(records[REC_NUM].no,str);
printf("enter name:");scanf("%s",records[REC_NUM].name);
for(j=0;j<NUM_SUBJECT;j++)
{
printf("%s:",subject[j]);
scanf("%d",&records[REC_NUM].score[j]);
sum=sum+records[REC_NUM].score[j];
}
records[REC_NUM].total=sum;
records[REC_NUM].average=records[REC_NUM].total/NUM_SUBJECT;
records[REC_NUM].order=0;
REC_NUM++;
saveRec();
}
⑨ 用C語言設計一個學生成績管理系統
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#defineMAX1000
/*定義學生成績信息結構*/
struct stu
{
char id[8];
char name[8];
(9)學生成績管理系統c擴展閱讀：
short：修飾int，短整型數據，可省略被修飾的int。（K&R時期引入）
long：修飾int，長整型數據，可省略被修飾的int。（K&R時期引入）
long long：修飾int，超長整型數據，可省略被修飾的int。（C99標准新增）
signed：修飾整型數據，有符號數據類型。（C89標准新增）
unsigned：修飾整型數據，無符號數據類型。（K&R時期引入）
restrict:用於限定和約束指針，並表明指針是訪問一個數據對象的唯一且初始的方式。（C99標准新增）
復雜類型關鍵字
struct：結構體聲明。（K&R時期引入）
union：聯合體聲明。（K&R時期引入）
enum：枚舉聲明。（C89標准新增）
typedef：聲明類型別名。（K&R時期引入）
sizeof：得到特定類型或特定類型變數的大小。（K&R時期引入）
inline:內聯函數用於取代宏定義，會在任何調用它的地方展開。（C99標准新增）
⑩ 學生成績管理系統 c語言
兩年前做的，現在都不會C語言了。
下面的代碼應該是對的。沒有注釋，但應該能看的懂，起名字也很不規范。只有信息輸入、和查詢，還有平均成績。不求得分，只是拿出來共享一下，提供個參考。
#include<stdio.h>
#include<string.h>
#define pl 64
void fine(int size[][6],char xh[][5],char name[][9])
{
int i,a,b;
char d[5];
for(;;)
{
printf("請輸入要查找的學號或姓名：");
scanf("%s",d);
for(i=0;i<pl;i++)
if(strcmp(d,xh[i])==0||strcmp(d,name[i])==0)
{
printf("學號：%s\t",xh[i]);
printf("姓名:%s\n",name[i]);
printf("成績：");
for(a=0;a<5;a++)
{
printf("%d ",size[i][a]);
}
printf("\n平均成績：%d\n\n",size[i][5]);
}
}
}
void main()
{
int size[pl][6],a,i;
char b, name[pl][9], xh[pl][5];
for(i=0;i<pl;i++)
{
printf("學號：");
scanf("%s",xh[i]);
printf("姓名:");
scanf("%s",name[i]);
printf("成績:");
size[i][5]=0;
for(a=0;a<5;a++)
{
scanf("%d",&size[i][a]);
size[i][5]+=size[i][a];
}
size[i][5]/=5;
}
for(i=0;i<pl;i++)
{
printf("學號：%s\t",xh[i]);
printf("姓名:%s\n",name[i]);
printf("成績：");
for(a=0;a<5;a++)
{
printf("%d ",size[i][a]);
}
printf("\n平均成績：%d\n",size[i][5]);
}
fflush(stdin);
printf("是否要查找：y or n：\n");
scanf("%c",&b);
if(b=='y'||b=='Y')
fine(size,xh,name);
}