#include<stdio.h>
#define N 3
struct Student
{

    int num;
    char sex;
    char name[20];
    float score[4];
    float aver;
};
int main()
{
    void input(struct Student stu[]);
    struct Student max(struct Student stu[]);
    void print(struct Student stu);
    struct Student stu[N],*p=stu;
    input(p);
    print(max(p));
    return 0;
}
void input(struct Student stu[])
{
    int i;
    for(i=0; i<N; i++)
    {
        scanf("%d%s%f%f%f%f",&stu[i].num,&stu[i].sex,&stu[i].name,&stu[i].score[0],&stu[i].score[1],&stu[i].score[2],&stu[i].score[3]);
        stu[i].aver = (stu[i].score[0]+stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/4.0;
    }
}
struct Student max(struct Student stu[])
{

    int i,m = 0;
    for(i = 0; i<N; i++)

        if(stu[i].aver>stu[m].aver)
            m=i;
    return stu[m];
}
void print(struct Student stu)
{
    printf("\n成绩最高的学生是：\n");
    printf("学号：%d\n性别：%s\n姓名：%s\n四门课成绩：%f%f%f%f\n平均成绩：%6.2f\n",stu.num,stu.sex,stu.name,stu.score[0],stu.score[1],stu.score[2],stu.score[3],stu.aver);
}

void input(struct Student stu[])
{
    int i;
    for(i=0; i<N; i++)
    {
        scanf("%d%*c%c%s%f%f%f%f",&stu[i].num,&stu[i].sex,&stu[i].name,&stu[i].score[0],&stu[i].score[1],&stu[i].score[2],&stu[i].score[3]);
        stu[i].aver = (stu[i].score[0]+stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/4.0;
    }
}

具体解释请参考该帖子(http://bbs.bccn.net/thread-439469-1-1.html)三楼解析。

[ 本帖最后由 liao06550107 于 2014-12-3 00:17 编辑 ]