#include <iostream>
#include <fstream>
#include <cstdio>
#include <cmath>

using namespace std;

int main ()
{
#ifndef ONLINE_JUDGE
	freopen ("Crossed ladders.txt","r",stdin);
#endif
	double x,y,c;
	double max,min,mid,dis;

	x = y = c = 0.0;
	while (scanf ("%lf%lf%lf",&x,&y,&c) != EOF)
	{
		x = x * x;
		y = y * y;
		if ( x > y)
		{
			max = sqrt (y - c * c) + 0.00001;
		}
		else
		{
			max = sqrt (x - c *  c) + 0.00001;
		}
		min = 0.0;
		while (true)
		{
			mid = (max + min) / 2.0;
			dis = (1.0 / sqrt (x - mid * mid) + 1.0 / sqrt ( y - mid * mid)) - 1.0 / c;
			if (fabs(dis) <= 0.000001)
			{
				printf ("%.3lf\n",mid);
				break;
			}
			else if (dis > 0)
			{
				max = mid;
			}
			else
			{
				min = mid;
			}
		}
		x = y = c = 0.0;
	}

	return 0;
}
			

• 谁能帮我看看这个程序错哪呢？谢谢了 (936) queyue2004 2005-07-27 21:15:21
  • 发到你mail里了 (0) JiangLY 2005-07-27 21:17:59