#include
#include
#include
using namespace std;
bool approx_equal(double x, double y)
{
const double EPSILON = 1E-14;
if (x == 0) return fabs(y) <= EPSILON;
if (y == 0) return fabs(x) <= EPSILON;
return fabs(x - y) / max(fabs(x), fabs(y)) <= EPSILON;
}
int main()
{
double x;
cout << "Enter a number: ";
cin >> x;
double y;
cout << "Enter another number: ";
cin >> y;
if (approx_equal(x, y))
cout << "The numbers are approximately equal.\n";
else
cout << "The numbers are different.\n";
return 0;
}