C语言这个一点不会啊有人教教我吗

Question

Answer 1

参考一下，结构体赋值及排序：

#include "stdio.h"

#define N 2
struct student{
    int id;
    char name[20];
    int kaoqun;
    int biaoxian;
    int zuoye;
    int biji;
    int sum;
}stud[N],t;

int main()
{
    int i,j;
    for(i=0;i<N;i++){
        printf("请输入第%d个学生信息\n",i+1);
        scanf("%d %s",&stud[i].id,&stud[i].name);
        fflush(stdin);
        scanf("%d %d %d %d",&stud[i].kaoqun,&stud[i].biaoxian,&stud[i].zuoye,&stud[i].biji);
        stud[i].sum = stud[i].kaoqun*0.3+stud[i].biaoxian*0.3+stud[i].zuoye*0.3+stud[i].biji*0.1;
    }
    
    //排序
    
    for (i = 0; i < N - 1; i++){
        for (j = 0; j < N - 1 - i; j++){ //按成绩对学生信息进行排序
            if (stud[j].sum > stud[j + 1].sum){ //整型数字的比较
                t = stud[j];
                stud[j] = stud[j + 1];
                stud[j + 1] = t;
            }
        }
    }
    //打印
    printf("学号\t姓名\t考勤\t表现\t作业\t笔记\t总分\t\n");
    for (i = 0; i < N; i++){
        printf("%d\t", stud[i].id);
        printf("%s\t", stud[i].name);
        printf("%d\t", stud[i].kaoqun);
        printf("%d\t", stud[i].biaoxian);
        printf("%d\t", stud[i].zuoye);
        printf("%d\t", stud[i].biji);
        printf("%d \n", stud[i].sum);
    }
    
    return 1;
}