pi.cpp

圆周率Pi的经典算法

#include <iostream>

using namespace::std;
const int LOOP = 100000000;
int main()
{
	int R=RAND_MAX;				//RAND_MAX = 0x7fff;
	int x;
	int y;
	int count=0;
	for(int i=0; i<LOOP; i++)
	{
		x = rand();
		y = rand();
		if(x*x+y*y<R*R)
			count++;
	}
	cout<<count<<endl;

	return 1;
}