1069 qsort你这是什么状况，printf一下个别结构体的值发生变化？

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct rect
{
	int x;
	int y;
	int z;
}r[32];
struct sh
{
	int s;
	int height;
}s[100];

int cmp(const void *lhs,const void *rhs)
{
	struct sh *a=(struct sh*)lhs;
	struct sh *b=(struct sh*)rhs;
	return (*b).s-(*b).s;
}

int main()
{
	freopen("1069.txt","r",stdin);
	int n,i,j,k;
	while(scanf("%d",&n)!=EOF)
	{
		j=0;
		memset(s,0,sizeof(s));
		for(i=0;i<n;i++)
		{
		
			scanf("%d%d%d",&r[i].x,&r[i].y,&r[i].z);
//			printf("%d %d %d\n",r[i].x,r[i].y,r[i].z);

			j++;
			s[j].s=r[i].x*r[i].y;
			s[j].height=r[i].z;
			
			j++;
			s[j].s=r[i].y*r[i].z;
			s[j].height=r[i].x;
			
			j++;
			s[j].s=r[i].x*r[i].z;
			s[j].height=r[i].y;
		}
		k=j;
		qsort(s,k,sizeof(struct sh),cmp);//断点
		for(i=10;i<=k;i++)
			printf("%d %d\n",s[i].s,s[i].height);//断点

	}
	return 0;
}