程序代码：

#include<stdio.h>
#include<string.h>
struct Student
{
    char num[6];
    char name[10];
    int math;
    int english;
    int general;
};
struct Student stu[100]={{"05001","Jam",78,68,146},{"05002","Bill",80,98,178},{"05003","Bob",82,83,165},{"05004","Sam",69,82,151},{"05005","Steven",94,83,177}};
void exchange(struct Student stu[],struct Student *p1,struct Student *p2)        //交换函数
{
    int matht,englisht,generalt;
    char namet[10],numt[6];
    strcpy(numt,p1->num);strcpy(p1->num,p2->num);strcpy(p2->num,numt);
    strcpy(namet,p1->name);strcpy(p1->name,p2->name);strcpy(p2->name,namet);
    matht=p1->math;p1->math=p2->math;p2->math=matht;
    englisht=p1->english;p1->english=p2->english;p2->english=englisht;
    generalt=p1->general;p1->general=p2->general;p2->general=generalt;
}

//功能八，通过总分信息排序
void main()       
{
    int i,j,k,m,p;
    int hign;
    for(m=0;m<100;m++)
    if(stu[m].num[0]==NULL)
    {
        hign=m-1;
        break;
    }
    printf("%d\n",hign);
    for(i=hign;i<=0;i--)        //我感觉着部分好像没有执行啊！
        for(j=0;j<i;j++)
            if(p=stu[j].general>stu[j+1].general)
            {
                printf("%d",p);
                exchange(stu,&stu[j],&stu[j+1]);        //冒泡排序
            }
    for(k=0;k<100;k++)
        if(stu[k].num[0]!=NULL)
            printf("%s    %s    %d    %d    %d\n",stu[k].num,stu[k].name,stu[k].math,stu[k].english,stu[k].general);
}