HCF_Finding_from_two_digits.cpp

#include <iostream>
using namespace std;
int main() {
  int a, b, hcf, r;
  cout << "Enter two numbers : ";
  cin >>a>>b;
  while (true) {
    hcf = b;
    r = a % b;
    a = b;
    b = r;
    if (b == 0) {
      break;
    }
  }
  cout << "HCF is " << hcf;
}