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大佬能不能帮我看看错哪儿了,电脑上行,交了就不能

Posted by 20162430827 at 2018-05-31 20:12:04 on Problem 1005
#include <stdio.h>
#include <math.h>
#define PI 3.1415
float R(float x,float y)//圆半径 
{
	float sumx,sumy,sum;
	sumx=x*x;
	sumy=y*y;
	sum=sumx+sumy;
	return (sqrt(sum));
}
float S(float c)//半圆面积 
{
	float sum,sumx;
	sumx=c*c;
	sum=(PI*sumx)/2.0; 
	return sum;
} 
int main()
{
	float N,sum,c,r,s;
	float X[100],Y[100],A[100];
	int i;
	printf("输入N:"); 
	scanf("%f",&N); 
	for(i=0;i<N;i++)
	{
		scanf("%f%f",&X[i],&Y[i]);
	}
	for(i=0;i<N;i++)
	{
		sum=0;
		r=R(X[i],Y[i]);
		s=S(r);
		sum=s/50;
		A[i]=(sum-0.5)+1;
	}
	for(i=0;i<N;i++)
	{
		printf("属性%d: 该属性将在第%0.f年开始侵蚀 \n",i+1,A[i]);
		if(i==N-1) printf("输出结束"); 
	}
	return 0;
}

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