DivImpar

int DivImpar(int a,int b)
{
    while(a%2==0)
	    a/=2;
    while(b%2==0)
	    b/=2;
    while(a!=b)
    {
	    if(a>b)
	        a=a-b;
	    else
	        b=b-a;
    }
    return a;
}