gcd
#include <iostream>
int gcd(int a, int b);
int main() {
int num1, num2;
std::cout << "Enter two numbers: ";
std::cin >> num1 >> num2;
std::cout << "GCD of " << num1 << " and " << num2 << " is: " << gcd(num1, num2);
return 0;
}
int gcd(int a, int b) {
while (b != 0) {
int temp = b;
b = a % b;
a = temp;
}
return a;
}