bad num 9 - lists

void split(node* t, node* &p, int n)
{
    n--;
    while(t && n)
        t = t->next;
    p = t->next;
    t->next = 0;
}

void copyl(node* t, node* &p)
{
    p = t;
    node* q = p;
    while(t)
    {
        q = t;
        t = t->next;
        q = q->next;
    }
}

void del_even(node* &t)
{
    node* p = t;
    while(p)
    {
        if(!(p->data % 2))
            delete_info(p, p->data);
        p = p->next;
    }
}

void del_odd(node* &t)
{
    node* p = t;
    while(p)
    {
        if(p->data % 2)
            delete_info(p, p->data);
        p = p->next;
    }
}

void split_evod(node* &t, node* &p)
{
    copyl(t, p);
    del_even(t);
    del_odd(p);
}