#include<iostream>
#include<math.h>
#define PI 3.1415926
using namespace std;
struct point
{
	float x;
	float y;float z;int w;
};
void paixu(point *a,int n)
{for(int i=0;i<n-1;i++)
 for(int j=i+1;j<n;j++)
	 if(a[i].z>a[j].z)
	 { 
		 point c;c=a[i];a[i]=a[j];a[j]=c;
	 int k;k=a[i].w;a[i].w=a[j].w;a[j].w=k;
	 }
}


void zezhang(float &r)
{float w=r*r*PI+100;
w=w/PI;
	r=pow(w,0.5);
}

int main()
{point a[10];
int n;
cin>>n;
for(int i=0;i<n;i++)
{
cin>>a[i].x;
cin>>a[i].y;
a[i].z=pow(a[i].x*a[i].x+a[i].y*a[i].y,0.5);a[i].w=i+1;
}
paixu(a,n);
for(i=0;i<n;i++)
{int count=0;float r=0;
while(1)
{zezhang(r);
count++;
if(a[i].z<r){cout<<"Property "<<a[i].w<<": This property will begin eroding in year "<<count<<'.'<<endl;break;}

}
}
cout<<"END OF OUTPUT."<<endl;
return 0;
}

• Re:为什么是Compile Error，大侠帮帮忙 (922) zimingforever 2010-07-07 13:31:33