#include<stdio.h> #include<malloc.h> typedef struct _student_info_ { char s_id[16]; //学号 char s_name[32]; //姓名 int s_score[3]; //三科成绩 }student_info; void input(student_info *L) { scanf("%s %s %d %d %d", L->s_id, L->s_name, &(L->s_score[0]), &(L->s_score[1]), &(L->s_score[2])); } void print(student_info *L) { printf("%s,%s,%d,%d,%d\n", L->s_id, L->s_name, L->s_score[0], L->s_score[1], L->s_score[2]); } int main() { student_info *list; int n = 0, i = 0; scanf("%d", &n); while(getchar() != '\n') continue; if(n > 0 && n < 100) list = (student_info *)malloc(sizeof(student_info)*n); else return 0; for(i = 0; i < n; i++) { input(&list[i]); //一行一行获取，忽略一行多余的数据 while(getchar() != '\n') continue; } for(i = 0; i < n; i++) { print(&list[i]); } free(list); return 0; }给以上代码添加注释

#include <stdio.h>
#include <malloc.h>

typedef struct _student_info_
{
    char s_id[16];        // 学号
    char s_name[32];      // 姓名
    int s_score[3];       // 三科成绩
} student_info;

void input(student_info *L)
{
    scanf("%s %s %d %d %d", L->s_id, L->s_name, &(L->s_score[0]), &(L->s_score[1]), &(L->s_score[2]));
}

void print(student_info *L)
{
    printf("%s,%s,%d,%d,%d\n", L->s_id, L->s_name, L->s_score[0], L->s_score[1], L->s_score[2]);
}

int main()
{
    student_info *list;
    int n = 0, i = 0;
    scanf("%d", &n);
    while (getchar() != '\n')
        continue;

    if (n > 0 && n < 100)
        list = (student_info *)malloc(sizeof(student_info) * n);  // 动态分配内存空间
    else
        return 0;

    for (i = 0; i < n; i++)
    {
        input(&list[i]);
        // 一行一行获取，忽略一行多余的数据
        while (getchar() != '\n')
            continue;
    }

    for (i = 0; i < n; i++)
    {
        print(&list[i]);
    }

    free(list);  // 释放内存空间
    return 0;
}

这是一个简单的学生成绩管理程序。程序通过动态分配内存，存储学生的学号、姓名和三科成绩，并可以输入和输出学生信息。请注意，此代码没有进行错误处理和输入验证。