//This program demonstrates how floating-point
//round-off errors can make equality operations ureliable.
#include <iostream>
using namespace std;

int main()
{
	double a = 1.5;				//a is 1.5.
	double b = 1.5;				//b is 1.5.
	
	a += 0.0000000000000001;	//add a little to a.
	if (a == b)
		cout << "Both a and b are the same.\n";
	else
		cout << "a and b are not the same.\n";
		
	return 0;
}