#include
int main() { int num1, num2;
std::cout << " Enter a value to check for the greatest common divisor ";
std::cin >> num1 >> num2;
int min=(num1<num2)? num1:num2;
int largestfactor=1;
for (int i=1; i<=min ; i++)
if (num1%i==0 && num2%i==0)
largestfactor=i;
std::cout<< largestfactor;
}