程序代码：

#include<stdio.h>
struct Student
{
    char name[10];
    float score;
};
void main()
{
struct    Student a[4]={"zhan",68,"li",78,"wang",78,"sun",89};
    int i,j;
    for(i=0;i<4;i++)
        printf("%s,%1.0f ",a[i].name,a[i].score);
    printf("\n");
    for( i=0;i<3;i++)
        for(j=0;j<3-i;j++){
        struct Student temp;
            if(a[j].score<a[j+1].score)
                {
                temp=a[j];
                a[j]=a[j+1];
                a[j+1]=temp;
                }
            else
            if((a[j].score=a[j+1].score)&&(strcmp(a[j].name,a[j+1].name)>0))
                {
                temp=a[j];
                a[j]=a[j+1];
                a[j+1]=temp;
                }               


        }
    for( i=0;i<4;i++)
        printf("%s ",a[i].name);
    printf("\n");
}