|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
#include <string.h>
|
|
|
|
|
|
#define MAX_LEN 10 // 字符串最大长度
|
|
|
|
|
|
#define STU_NUM 30 // 最多的学生人数
|
|
|
|
|
|
#define COURSE_NUM 6 // 最多的考试科目数
|
|
|
|
|
|
typedef struct student
|
|
|
|
|
|
{
|
|
|
|
|
|
long num; // 每个学生的学号
|
|
|
|
|
|
char name[MAX_LEN]; // 每个学生的姓名
|
|
|
|
|
|
float score[COURSE_NUM]; // 每个学生COURSE_NUM门功课的成绩
|
|
|
|
|
|
float sum; // 每个学生的总成绩
|
|
|
|
|
|
float aver; // 每个学生的平均成绩
|
|
|
|
|
|
}STU;
|
|
|
|
|
|
int Menu(void);
|
|
|
|
|
|
void ReadScore(STU stu[], int n, int m);
|
|
|
|
|
|
void AverSumofEveryStudent(STU stu[], int n, int m);
|
|
|
|
|
|
int main(void)
|
|
|
|
|
|
{
|
|
|
|
|
|
char ch;
|
|
|
|
|
|
int n = 0, m = 0;
|
|
|
|
|
|
STU stu[STU_NUM];
|
|
|
|
|
|
printf("Input student number(n<%d):", STU_NUM);
|
|
|
|
|
|
scanf("%d", &n);
|
|
|
|
|
|
printf("Input course number(m<=%d):",COURSE_NUM);
|
|
|
|
|
|
scanf("%d", &m);
|
|
|
|
|
|
while (1)
|
|
|
|
|
|
{
|
|
|
|
|
|
ch = Menu(); // 显示菜单，并读取用户输入
|
|
|
|
|
|
switch (ch)
|
|
|
|
|
|
{
|
|
|
|
|
|
case 1:ReadScore(stu, n, m);
|
|
|
|
|
|
break;
|
|
|
|
|
|
case 2: AverSumofEveryStudent(stu, n, m);
|
|
|
|
|
|
break;
|
|
|
|
|
|
case 0: printf("End of program!");
|
|
|
|
|
|
exit(0);
|
|
|
|
|
|
default:printf("Input error!");
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
return 0;}
|
|
|
|
|
|
// 函数功能：显示菜单并获得用户键盘输入的选项
|
|
|
|
|
|
int Menu(void)
|
|
|
|
|
|
{
|
|
|
|
|
|
int itemSelected;
|
|
|
|
|
|
printf("Management for Students' scores\n");
|
|
|
|
|
|
printf("1.Input record\n");
|
|
|
|
|
|
printf("2.Calculate total and average score of every course\n");
|
|
|
|
|
|
printf("0.Exit\n");
|
|
|
|
|
|
printf("Please Input your choice:");
|
|
|
|
|
|
scanf("%d", &itemSelected); // 读入用户输入
|
|
|
|
|
|
return itemSelected;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 函数功能：输入n个学生的m门课成绩
|
|
|
|
|
|
void ReadScore(STU stu[], int n, int m)
|
|
|
|
|
|
{
|
|
|
|
|
|
int i, j;
|
|
|
|
|
|
printf("Input student's ID, name and score:\n");
|
|
|
|
|
|
/* ---------- begain ---------- */
|
|
|
|
|
|
for(i=0;i<n;i++)
|
|
|
|
|
|
{scanf("%ld%s",&stu[i].num,stu[i].name);
|
|
|
|
|
|
for (j=0; j<m; j++)
|
|
|
|
|
|
scanf("%f",&stu[i].score[j]);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* ----------- end ----------- */
|
|
|
|
|
|
}
|
|
|
|
|
|
// 函数功能：计算每个学生各门课程的总分和平均分
|
|
|
|
|
|
void AverSumofEveryStudent(STU stu[], int n, int m)
|
|
|
|
|
|
{
|
|
|
|
|
|
int i, j;
|
|
|
|
|
|
for (i=0; i<n; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
stu[i].sum = 0;
|
|
|
|
|
|
for (j=0; j<m; j++)
|
|
|
|
|
|
{
|
|
|
|
|
|
stu[i].sum = stu[i].sum + stu[i].score[j];
|
|
|
|
|
|
}
|
|
|
|
|
|
stu[i].aver = m>0 ? stu[i].sum / m : -1;
|
|
|
|
|
|
printf("student %d: sum = %.0f, aver = %.0f\n",
|
|
|
|
|
|
i+1, stu[i].sum, stu[i].aver);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
