循环结构程序设计思想

Question

某人需要对某班学生成绩进行处理，生成班级成绩单。假设班级人数为N（为了方便调试程序，N取5），学生的学号、姓名均不超过10个字符，输入每个学生的学号、姓名、4科成绩（例如：英语、数学、体育、计算机），计算每个学生的总分、平均分，然后按照总分由高到低排名，输出原始的成绩单和排名后的成绩单。利用一维、二维数组 c语言

Answer 1

#include <stdio.h>
#include <stdlib.h>
 
#define NUM 5 //5个学生，方便修改
 
typedef struct _Student 
{
    char id[11];  // 学号
    char name[11];  // 姓名
    float score[4];  // 4科成绩
    float total;  // 总分
    float avg;  // 平均分
}Student;
 
int main() 
{
    Student stu[NUM];  // 学生信息数组
    int i, j;
 
    // 输入学生信息和成绩
    for (i = 0; i < NUM; i++) 
    {
        printf("请输入第%d个学生的学号:",i+1);
        scanf("%s",stu[i].id);
        printf("请输入第%d个学生的姓名:",i+1);
        scanf("%s",stu[i].name);
        stu[i].total = 0;
        for (j = 0; j < 4; j++) 
        {
            printf("请输入第%d个学生的第%d门课成绩:",i+1,j+1);
            scanf("%f", &stu[i].score[j]);
            stu[i].total += stu[i].score[j];
        }
        stu[i].avg = stu[i].total/4;
    }

    printf("原始成绩单：\n");
    printf("%12s%12s%10s%10s%10s%10s%10s%10s\n","学号","姓名","英语","数学","体育","计算机","总分","平均分");
    for (i = 0; i < NUM; i++) 
    {
        printf("%12s%12s", stu[i].id, stu[i].name);
        for (j = 0; j < 4; j++) 
        {
            printf("%10.1f", stu[i].score[j]);
        }
        printf("%10.1f%10.1f", stu[i].total, stu[i].avg);
    }

    for (i = 0; i < NUM - 1; i++) 
    {
        for (j = 0; j < NUM - i - 1; j++) 
        {
            if (stu[j].total < stu[j+1].total) 
            {
                Student temp = stu[j];
                stu[j] = stu[j+1];
                stu[j+1] = temp;
            }
        }
    }
 
    printf("\n排序后成绩单：\n");
    printf("%12s%12s%10s%10s%10s%10s%10s%10s\n","学号","姓名","英语","数学","体育","计算机","总分","平均分");
    for (i = 0; i < NUM; i++) 
    {
        printf("%12s%12s", stu[i].id, stu[i].name);
        for (j = 0; j < 4; j++) 
        {
            printf("%10.1f", stu[i].score[j]);
        }
        printf("%10.1f%10.1f", stu[i].total, stu[i].avg);
    }
    system("pause");
    return 0;
}