浙大版《C语言程序设计（第3版）》题目集 习题9-6 按等级统计学生成绩

#include <stdio.h>
#define MAXN 10

struct student{
    int num;
    char name[20];
    int score;
    char grade;
};

int set_grade( struct student *p, int n );

int main()
{   struct student stu[MAXN], *ptr;
    int n, i, count;

    ptr = stu;
    scanf("%d\n", &n);
    for(i = 0; i < n; i++){
       scanf("%d%s%d", &stu[i].num, stu[i].name, &stu[i].score);
    } 
   count = set_grade(ptr, n);
   printf("The count for failed (<60): %d\n", count);
   printf("The grades:\n"); 
   for(i = 0; i < n; i++)
       printf("%d %s %c\n", stu[i].num, stu[i].name, stu[i].grade);
    return 0;
}

/* 你的代码将被嵌在这里 */

int set_grade( struct student *p, int n )
{
    int i;
    int temp=0;
    for(i=0;i<n;i++)
    {
        if(p[i].score>=85&&p[i].score<=100) p[i].grade='A';
        if(p[i].score>=70&&p[i].score<=84) p[i].grade='B';
        if(p[i].score>=60&&p[i].score<=69) p[i].grade='C';
        if(p[i].score>=0&&p[i].score<=59) {p[i].grade='D';temp++;}
    }
    return temp;
}