求助 我的输出怎么就达不到题的要求呢 C++

[zzcwyu]

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int m,i;
int year;
float x,y;
double area;
do
{
cin>>m;
}
while(m<0);
for(i=0;i<m;i++)
{
cin>>x>>y;
}

if(y>=0)
{
area=3.14*(x*x+y*y);
area=area/100;
year=ceil(area);
}
for(i=0;i<m;i++)
cout<<"proverty: "<<i+1<<" this proverty will bein eroding in

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



这是我写的一程序，

这是题的要求

input

2

1.0 1.0

25.0 0

output

Property 1: This property will begin eroding in year 1.
Property 2: This property will begin eroding in year 20.
END OF OUTPUT

而我的输出结果是
Property 1: This property will begin eroding in year 20.
Property 2: This property will begin eroding in year 20.
END OF OUTPUT



请高手帮一下

[hityct1]

#include "stdafx.h"
#include  <iostream> 
#include  <cmath> 
using namespace std; 

int main() 
{ 

	int m,i;   
	int year[2];  
	float x[2],y[2]; 
	double area[2]; 
 		
	cin>>m;  
 
	for(i=0;i<m;i++)  
	{  
		cin>>x[i]>>y[i]; 
	
		if(y[i]>=0) 	
		{ 		
			area[i]=3.14*(x[i]*x[i]+y[i]*y[i]);             
		    area[i]=area[i]/100; 
		    year[i]=ceil(area[i]); 
		} 
	}


	for(i=0;i <m;i++) 
		cout<<"proverty"<<i+1<<": "<<"this proverty will bein eroding in year "<<year[i]<<endl; 
	
	cout<<"END OF OUTPUT."<<endl; 

	return 0; 
} 

[追忆]

你这道题的题目是什么，我感觉你的do while 循环不应该要，要不然你的M的值始终小于零，你的后面的FOR循环就不能执行了，因为i不可能小于零！

[zzcwyu]

一定要用到数组吗，能不能在原程序修改一下啊
2楼说的好像不对哦，我去把m改成大于0，反而编译不了

[IT_lau]

lz,,你要干什么？？？

[zzcwyu]

是一道 ACM题，m 是一个不确定数，是指输入几组数据，即坐标x ,y ,y>0;

[Chappell]

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int m,i;
int year;
// float x,y;
double area;
do
{
cin>> m;
}
while(m <0);
float* x = new float[m];
float* y = new float[m];
for(i=0;i <m;i++)
{
cin>> x[i]>> y[i];


if(y[i]>=0)
{
area=3.14*(x[i]*x[i]+y[i]*y[i]);
area=area/100;
year=ceil(area);
}
}
for(i=0;i <m;i++)
cout <<"proverty: " <<i+1 <<" this proverty will bein eroding in year :" <<year <<endl;
cout <<"END OF OUTPUT.";
delete []x;
delete []y;
return 0;
}

[zzcwyu]

六楼的朋友，你的程序我运行后输出的结果是不合题的要求的，跟我的问题一样

[ttkk_2007]

int main()  
{  
int m,i;  
int *year;  
// float x,y;  
double area;  
do  
{  
cin>>  m;   
}  
while(m  <0);  
float* x  = new float[m]; 
float* y  = new float[m]; 
year = new int[m];
for(i=0;i  <m;i++)  
{  
cin>>  x[i]>>  y[i];  


if(y[i]>=0)  
{  
area=3.14*(x[i]*x[i]+y[i]*y[i]);  
area=area/100;  
year[i]=ceil(area);  
}  
} 
for(i=0;i  <m;i++)  
cout  <<"proverty: "  <<i+1  <<"  this proverty will bein eroding in  year :"  <<year[i]  <<endl;  
cout  <<"END OF OUTPUT.";  
delete []x; 
delete []y; 
delete []year;
return 0;  
}