Thread: Greatest common divisor

I am working on the greatest common divisor (gcd), previously I have already declare a = 667 and c = 140 and now I am trying to get the (gcd) working. The answer to this is 1. Here is my code:

Code:

int gcd(int a, int c);
{
 int g;
 g = a;
 while (a%g!=0||c%g!=0)
{
g--;
}
return g;
}

Is this the right code for (gcd). If so I find it hard to display on the screen as once compile it then disappear. Is there a way that can make g display itself such as

Code:

cout << g << endl;