IsCh(number)
{
        new rr;
        if(number%2 == 0)
        {
                rr = 1;
        }
        else
        {
                rr = 0;
        }
        return rr;
}

IsCh(&number)
{
        if(number % 2 == 0) return 1;
        return 0;
}

#define IsEven(%1) (((%1) % 2) == 0)

IsNeCh(number)
{
        new rr;
        if(number%2 == 1)
        {
                rr = 1;
        }
        else
        {
                rr = 0;
        }
        return rr;
}