CMMDC cu impartire

#include <iostream>

using namespace std;

int main()
{
    int a, b, r, d;
    cout<<"a="; cin>>a;
    cout<<"b="; cin>>b;
    r=a%b;
    while(r!=0)
    {
        a=b;
        b=r;
        r=a%b;
    }
    cout<<"CMMDC este "<<b;
    return 0;
}