Greatest Common Divisor

#include <iostream>
using namespace std;

int GCD(int a, int b)
{
    int Remainder;

    while( b != 0 )
    {
        Remainder = a % b;
        a = b;
        b = Remainder;
    }

    return a;
}

int main()
{
 int x, y;

 cout << "This program allows calculating the GCD\n";
 cout << "Value 1: ";
 cin >> x;
 cout << "Value 2: ";
 cin >> y;

 cout << "\nThe Greatest Common Divisor of "
      << x << " and " << y << " is " << GCD(x, y) << endl;  

 return 0;
}