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693 B
693 B
// 函数功能：按选择法将数组sum的元素值排序
void SortbyScore(STU stu[],int n,int m,int (*compare)(float a,float b))
{
int i, j, k, t;
for (i=0; i<n-1; i++)
{
k = i;
for (j=i+1; j<n; j++)
{
if ((*compare)(stu[j].sum, stu[k].sum)) k = j;
}
if (k != i)
{
for (t=0; t<m; t++) // 交换m门课程的成绩
{
SwapFloat(&stu[k].score[t], &stu[i].score[t]);
}
SwapFloat(&stu[k].sum, &stu[i].sum); // 交换总分
SwapFloat(&stu[k].aver, &stu[i].aver); // 交换平均分
SwapLong(&stu[k].num, &stu[i].num); // 交换学号
SwapChar(stu[k].name, stu[i].name); // 交换姓名
}
}
}