what is euclid's algorithm code example

Example 1: euclid algorithm

int Euclid(int a, int b)
{
    int r;
    while(b != 0) 
    {
         r = a % b;
         a = b; 
         b = r; 
    }
    return a; 
}

Example 2: euclid algorithm

def MCD(a,b):
    while b != 0:
        a, b = b, a % b
    return a