学生成绩录入
Ⅰ 用C语言做一个学生成绩管理系统 输入学生人数,录入学生成绩
#include <algorithm>
#include <iostream>
#include <cstring>
#include <cstdio>
#include <string>
#include <vector>
#include <queue>
#include <stack>
#include <cmath>
using namespace std;
/*定义学生结构体*/
struct Student
{
char ID[20];
char Name[20];
float Mark1;
float Mark2;
float Mark3;
float Average;
};
/*声明学生数组及学生数量*/
struct Student students[1000];
int num=0;
/*求平均值*/
float Avg(struct Student stu)
{
return (stu.Mark1+stu.Mark2+stu.Mark3)/3;
}
/*通过学号返回数组下标*/
int Student_SearchByIndex(char id[])
{
int i;
for (i=0;i<num;i++)
{
if (strcmp(students[i].ID,id)==0)
{
return i;
}
}
return -1;
}
/*通过姓名返回数组下标*/
int Student_SearchByName(char name[])
{
int i;
for (i=0;i<num;i++)
{
if (strcmp(students[i].Name,name)==0)
{
return i;
}
}
return -1;
}
/*显示单条学生记录*/
void Student_DisplaySingle(int index)
{
printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","成绩","成绩","成绩","平均成绩");
printf("-------------------------------------------------------------\n");
printf("%10s%10s%8.2f%8.2f%8.2f%10.2f\n",students[index].ID,students[index].Name,
students[index].Mark1,students[index].Mark2,students[index].Mark3,students[index].Average);
}
/*插入学生信息*/
void Student_Insert()
{
while(1)
{
printf("请输入学号:");
scanf("%s",&students[num].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[num].Name);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark1);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark2);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark3);
getchar();
students[num].Average=Avg(students[num]);
num++;
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
/*修改学生信息*/
void Student_Modify()
{
//float mark1,mark2,mark3;
while(1)
{
char id[20];
int index;
printf("请输入要修改的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id);
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要修改的学生信息为:\n");
Student_DisplaySingle(index);
printf("-- 请输入新值--\n");
printf("请输入学号:");
scanf("%s",&students[index].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[index].Name);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark1);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark2);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark3);
getchar();
students[index].Average=Avg(students[index]);
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
/*删除学生信息*/
void Student_Delete()
{
int i;
while(1)
{
char id[20];
int index;
printf("请输入要删除的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id);
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要删除的学生信息为:\n");
Student_DisplaySingle(index);
printf("是否真的要删除?(y/n)");
if (getchar()=='y')
{
for (i=index;i<num-1;i++)
{
students[i]=students[i+1];//把后边的对象都向前移动
}
num--;
}
getchar();
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
/*按姓名查询*/
void Student_Select()
{
while(1)
{
char name[20];
int index;
printf("请输入要查询的学生的姓名:");
scanf("%s",&name);
getchar();
index=Student_SearchByName(name);
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要查询的学生信息为:\n");
Student_DisplaySingle(index);
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
/*按平均值排序*/
void Student_SortByAverage()
{
int i,j;
struct Student tmp;
for (i=0;i<num;i++)
{
for (j=1;j<num-i;j++)
{
if (students[j-1].Average<students[j].Average)
{
tmp=students[j-1];
students[j-1]=students[j];
students[j]=tmp;
}
}
}
}
/*显示学生信息*/
void Student_Display()
{
int i;
printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","成绩","成绩","成绩","平均成绩");
printf("-------------------------------------------------------------\n");
for (i=0;i<num;i++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%10.2f\n",students[i].ID,students[i].Name,
students[i].Mark1,students[i].Mark2,students[i].Mark3,students[i].Average);
}
}
/*将学生信息从文件读出*/
void IO_ReadInfo()
{
FILE *fp;
int i;
if ((fp=fopen("Database.txt","rb"))==NULL)
{
printf("不能打开文件!\n");
return;
}
if (fread(&num,sizeof(int),1,fp)!=1)
{
num=-1;
}
else
{
for(i=0;i<num;i++)
{
fread(&students[i],sizeof(struct Student),1,fp);
}
}
fclose(fp);
}
/*将学生信息写入文件*/
void IO_WriteInfo()
{
FILE *fp;
int i;
if ((fp=fopen("Database.txt","wb"))==NULL)
{
printf("不能打开文件!\n");
return;
}
if (fwrite(&num,sizeof(int),1,fp)!=1)
{
printf("写入文件错误!\n");
}
for (i=0;i<num;i++)
{
if (fwrite(&students[i],sizeof(struct Student),1,fp)!=1)
{
printf("写入文件错误!\n");
}
}
fclose(fp);
}
/*主程序*/
void main()
{
int choice;
IO_ReadInfo();
while(1)
{
/*主菜单*/
printf("\n------ 学生成绩管理系统------\n");
printf("1. 增加学生记录\n");
printf("2. 修改学生记录\n");
printf("3. 删除学生记录\n");
printf("4. 按姓名查询学生记录\n");
printf("5. 按平均成绩排序\n");
printf("6. 退出\n");
printf("请选择(1-6):");
scanf("%d",&choice);
getchar();
switch(choice)
{
case 1:
Student_Insert();
break;
case 2:
Student_Modify();
break;
case 3:
Student_Delete();
break;
case 4:
Student_Select();
break;
case 5:
Student_SortByAverage();
Student_Display();
break;
case 6:
exit(0);
break;
}
IO_WriteInfo();
}
}
Ⅱ 用c语言设计一个学生成绩管理系统 该系统要实现的功能为：成绩录入：输入学生的学号、姓名及三门课成绩
我只有差不多的你可以自己改一改
/* ************************************************************************
* Filename: student_system.c
* Description:
* Version: 1.0
* Created: 2016年03月30日 17时27分11秒
* Revision: none
* Compiler: gcc
* Author: YOUR NAME (),
* Company:
* ************************************************************************/
#include <stdio.h>
#include <stdlib.h>
typedef struct stu
{
int num;
char name[20];
int score;
struct stu *next;
}STU;
void link_add_end(STU **head,STU *p_new)
{
p_new->next = *head;
*head = p_new;
}
void link_print(STU **head)
{
if(*head == NULL)
{
return;
}
STU *p_mov = *head;
while(p_mov != NULL)
{
printf("num==%d score==%d name==%s ",p_mov->num,p_mov->score,p_mov->name);
p_mov=p_mov->next;
}
}
void link_find_num(STU **head,int num)
{
STU *p_mov = *head;
while(p_mov != NULL)
{
if(p_mov->num == num)
{
printf("num==%d score==%d name==%s ",p_mov->num,p_mov->score,p_mov->name);
}
p_mov=p_mov->next;
}
}
void link_find_name(STU **head,char name[])
{
STU *p_mov = *head;
while(p_mov != NULL)
{
if(strcmp(p_mov->name,name)==0)
{
printf("num==%d score==%d name==%s ",p_mov->num,p_mov->score,p_mov->name);
}
p_mov=p_mov->next;
}
}
void link_delete_num(STU **head,int num)
{
STU *p_mov = *head;
STU *p_sav = p_mov;
while(p_mov != NULL)
{
if(p_mov->num == num)
{
if(p_mov == *head)
{
*head = p_mov->next;
free(p_mov);
}else if(p_mov->next == NULL)
{
p_sav->next=NULL;
free(p_mov);
}else
{
p_sav->next=p_mov->next;
free(p_mov);
}
}
p_sav=p_mov;
p_mov=p_mov->next;
}
}
void add(STU **head)
{
STU *p_new;
p_new = (STU *)malloc(sizeof(STU));
printf("请输入 学号 分数 姓名 ");
printf("例如 1 99 张三 ");
scanf("%d %d %s",&p_new->num,&p_new->score,p_new->name);
getchar();
link_add_end(head,p_new);
}
void prin(STU **head)
{
link_print(head);
}
void find(STU **head)
{
int num;
char name[20];
char cmd[20];
printf("1 find for num ");
printf("2 find for name ");
gets(cmd);
if(strcmp("1",cmd) == 0)
{
printf("please input find for num");
scanf("%d",&num);
getchar();
link_find_num(head,num);
}else if(strcmp("2",cmd)==0)
{
printf("please input find for name ");
gets(name);
link_find_name(head,name);
}else
{
printf("error!!");
return;
}
}
void delete(STU **head)
{
int num;
printf("please input delete for num ");
scanf("%d",&num);
getchar();
link_delete_num(head,num);
}
void help()
{
printf("************************ ");
printf("*add add link * ");
printf("*prt print link * ");
printf("*fid find link * ");
printf("*del delete link * ");
printf("*help print help * ");
printf("************************ ");
}
int main(int argc, char *argv[])
{
char cmd_key[20];
STU *head=NULL;
int i;
typedef void (*FUN)(STU **);
typedef struct cmd_fun
{
char key_cmd[20];
FUN fun;
}CMD;
CMD cmd[]={{"add",add},
{"prt",prin},
{"fid",find},
{"del",delete}};
help();
while(1)
{
gets(cmd_key);
if(strcmp(cmd_key,"help")==0)
{
help();
}
for(i=0; i<4; i++)
{
if(strcmp(cmd[i].key_cmd,cmd_key)==0)
{
cmd[i].fun(&head);
}
}
}
return 0;
}
Ⅲ 建立一个简单的学生成绩管理系统。 具体功能如下： （1）录入学生信息的功能。每个学生的数据包括学
C语言实战之学生成绩管理系统
Ⅳ 如何用Java实现“学生成绩输入”问题
import java.util.Scanner;
public class Student{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
System.out.println("请输入学生的人数....");
int num = sc.nextInt();
int[] arr = new int[num];
double[] chengji_arr = new double[num]; //存放成绩的
String[] String_arr = new String[num]; //存放姓名的
String chengjis = "";
String names = "";
for(int i = 0; i < arr.length && i < String_arr.length && i < chengji_arr.length; i++){
arr[i] = i;
int s = 0;
Students st = new Students();
System.out.println("请输入第"+(arr[i]+1)+"个学生的序号！");
st.setId(sc.nextInt());
System.out.println("请输入第"+(arr[i]+1)+"个学生的姓名！");
st.setName(sc.next());
System.out.println("请输入第"+(arr[i]+1)+"个学生的成绩！");
st.setChengji(sc.nextDouble());
String_arr[i] = st.getName(); //保存成绩
chengji_arr[i] = st.getChengji();
}
int max = 0;
int tmp = 0;
for (int i = 0; i < chengji_arr.length; i++) {
max = i;
for (int j = i + 1; j < chengji_arr.length; j++) {
if (chengji_arr[max] < chengji_arr[j])
max = j;// 记下较大数位置，再次比较，直到最大
}
if (i != max) {
tmp = (int)chengji_arr[i];
chengji_arr[i] = chengji_arr[max];
chengji_arr[max] = tmp;
}
}
for (int i = 0; i < chengji_arr.length; i++)
System.out.print("成绩为："+chengji_arr[i] + " ");
}
}
class Students{
private int id;
private String name;
private double chengji;
public void setId(int id){
this.id = id;
}
public int getId(){
return id;
}
public void setName(String name){
this.name = name;
}
public String getName(){
return name;
}
public void setChengji(double chengji){
this.chengji = chengji;
}
public double getChengji(){
return chengji;
}
}
//代码没有交换学生数组下标，麻烦提问者再修改一下吧，真的要睡了，明天继续上班，抱歉，只能帮你到这里了。
Ⅳ 如何轻松使用excel录入和分析学生成绩
方法一：姓名升序排序法——只教一个班的话可以把姓名按升序排序，即A~Z的顺回序，答即可根据姓氏首字母快速定位到指定学生，然后录入成绩；
方法二：讯飞语音录入——把学生名单导入到语音词库中，直接语音录入成绩，速度非常快，超级精准；
方法三：成绩录入系统——淘宝有卖的，Excel VBA开发的程序，粘贴名单后即可实现姓名简拼快速录入，自动计算平均分，优秀率，及格率，优A优B等
Ⅵ 在Excel中输入学生成绩，如何按成绩从低到
在excel中对学生成绩进行排名操作方法如下。（以下图中的数据为例子） 1、数据截止到第8行，把C2至C8单元格全选中。 2、在编辑栏中输入公式：=RANK(B2,B$2:B$8)。 3、按键盘的CTRL+回车键，C2至C8单元格即同时显示出名次数字，即可。 拓展资料： Microsoft Excel是Microsoft为使用Windows和Apple Macintosh操作系统的电脑编写的一款电子表格软件。直观的界面、出色的计算功能和图表工具，再加上成功的市场营销，使Excel成为最流行的个人计算机数据处理软件。在1993年，作为Microsoft Office的组件发布了5.0版之后，Excel就开始成为所适用操作平台上的电子制表软件的霸主。
Ⅶ VB输入学生成绩
PrivateSubMain()
DimScores(1To10)AsSingle
CallInputScore(Scores)
CallPrintScore(Scores)
CallAboveAverage(Scores)
CallScoreSort(Scores)
CallPrintScore(Scores)
CallFindMaxMin(Scores)
EndSub
PrivateSubInputScore(sngScores()AsSingle)
DimiAsSingle
Fori=LBound(sngScores)ToUBound(sngScores)
sngScores(i)=InputBox("请输入第"&i&"名学生高考成绩：","高考成绩管理系统",600)
Nexti
EndSub
PrivateSubPrintScore(sngScores()AsSingle)
DimiAsInteger
LoadForm1
Form1.Show
Fori=LBound(sngScores)ToUBound(sngScores)
Form1.PrintsngScores(i);
Nexti
Form1.Print
EndSub
PrivateSubScoreSort(sngScores()AsSingle)
DimiAsInteger,jAsInteger,tAsSingle
Fori=LBound(sngScores)ToUBound(sngScores)-1
Forj=i+1ToUBound(sngScores)
IfsngScores(j)>sngScores(i)Then
t=sngScores(i)
sngScores(i)=sngScores(j)
sngScores(j)=t
EndIf
Nextj
Nexti
EndSub
PrivateSubAboveAverage(sngScores()AsSingle)
DimiAsInteger,kAsInteger,sngSumAsSingle,sngAverageAsSingle
Fori=LBound(sngScores)ToUBound(sngScores)
sngSum=sngSum+sngScores(i)
Nexti
sngAverage=sngSum/UBound(sngScores)
Fori=LBound(sngScores)ToUBound(sngScores)
IfsngScores(i)>sngAverageThen
k=k+1
EndIf
Nexti
Form1.Print"平均值为：";sngAverage,
Form1.Print"高于平均值的人数为：";k
EndSub
PrivateSubFindMaxMin(sngScores()AsSingle)
DimiAsInteger,sngMaxAsSingle,sngMinAsSingle
sngMax=sngScores(LBound(sngScores))
sngMin=sngScores(LBound(sngScores))
Fori=LBound(sngScores)+1ToUBound(sngScores)
IfsngScores(i)>sngMaxThensngMax=sngScores(i)
IfsngScores(i)<sngMinThensngMin=sngScores(i)
Nexti
Form1.Print"最高分为：";sngMax,"最低分为：";sngMin
EndSub
Ⅷ 急！急1急！用java编写简单的学生成绩录入程序
User
u
=
new
User();
List<User>
list
=
new
ArrayList<User>();
Scanner
in
=
new
Scanner(System.in);
System.out.println("请输入学生总数：");
int
t
=
in.nextInt();
int
math
=
0;
int
pc
=
0;
int
sql
=
0;
for(int
i=1;i<=t;i++){
u.setId(i);
System.out.println("请输入第"
+
i
+
"个人的数学成绩");
math
=
in.nextInt();
u.setMath(math);
System.out.println("请输入第"
+
i
+
"个人的计算专机成绩");
pc
=
in.nextInt();
u.setPc(pc);
System.out.println("请输入第"
+
i
+
"个人的数据库属成绩");
sql
=
in.nextInt();
u.setSql(sql);
list.add(u);
}
Ⅸ C语言程序设计 输入学生成绩，直到输入成绩的数量超过50个或者输入的成绩不是有效成绩(0-100)
#include<stdio.h>
voidmain()
{
inti=0,j=0,k;
doubleMark[50],max,n;
scanf("%lf",&n);
while(n<=100&&n>=0)
{
Mark[i++]=n;
if(i>=5)
break;
scanf("%lf",&n);
}
k=i;
max=Mark[0];
for(i=0;i<k;i++)
if(Mark[i]>max)
max=Mark[i];
printf("其中来最自高分是：%lf ",max);
}