#include "stdio.h"
#include "math.h"
#define PI 3.1415
int main()
{
	int n,i,num=0;
	float x,y,s,r,a,b,c;
	a=0;b=0;
    while(scanf("%d",&n)!=EOF)
		{scanf("%f %f",&x,&y);if(y<0)return 0;num++;
		 for(i=1;;i++)
			{s=i*100;r=sqrt(s/PI);c=sqrt((x-a)*(x-a)+(y-b)*(y-b));
			 if(c<r){printf("Property %d: This property will begin eroding in year %d.\n",num,i);break;}
			}n--;
		 if(n==0){printf("END OF OUTPUT");return 0;}
		}
}

• Re:老大们，帮忙看一下，为什么每次的结果都一样 (478) 20051002020 2006-07-23 21:03:38