Online C++ compiler to run C++ program online

EKUB

// Online C++ compiler to run C++ program online
#include

using namespace std;

int main()
{
int a, b;

cout << "A = "; cin >> a;

cout << "B = "; cin >> b;

while (a != b)

{
if (a > b) a %= b;
else b %= a;

if (a == 0) a = b;

if (b == 0) b = a;
}

cout << a << endl;

return 0;
}