GCD/HCF TWO NUMBER USING DO WHILE LOOP IN C++

#include <iostream>
using namespace std;

int main ()
{
    int num1, num2;

    cout<<"PLEASE ENTER A NUMBER : ";
    cin>>num1;

    cout<<"PLEASE ENTER ANOTHER NUMBER : ";
    cin>>num2;



    do
    {
        if (num1 > num2)
        {
            num1 -= num2;
        }
        else
        {
            num2 -=num1;
        }
    } while (num1 != num2);

    cout<<"GCD/HCF IS : "<<num1;

    return 0;
}

OUTPUT