#include"stdio.h"
typedef int Bool;
int split(Bool a[],int low,int high);
void quicksort(Bool a[],int low,int high);
int main()
{
    Bool a[100];
    int i,j;
    printf("输入要排列的数据（小于100）【输入0时结束输入】:\n");
    for(i=0;;i++)
    {
        scanf("%d",&a[i]);
        if(a[i]==0)break;
    }
    quicksort(a,0,(i-1));
    for(j=0;j<i;j++)
        printf("%3d",a[j]);
    return 0;
}
int split(Bool a[],int low,int high)
{
    Bool basic;
    basic=a[low];
    for(;;)
    {
        for(;basic<=a[high]&&low<high;)
            high--;
        a[low++]=a[high];
        for(;basic>=a[low]&&low<high;)
            low++;
        a[high--]=a[low];
        if(low>=high)break;
    }a[high]=basic;
    return high;
}
void quicksort(Bool a[],int low,int high)
{
    int mid;
    if(low>high)return;
    mid=split(a,low,high);
    quicksort(a,low,mid-1);
    quicksort(a,mid+1,high);
}

2楼很，谢谢，system语句有什么作用啊？

哦，原来是这个作用啊