struct node *func1(int val)
{
    int i = 0, old = 0;
    struct node *tmp, *tmp2;
    
    tmp = tmp2 = create();
    
    tmp -> value = 1;
    
    for(i = 0; i < val; i++)
    {
        tmp2 -> next = create();
        tmp2 -> next -> value = tmp2 -> value + old;
        old = tmp2 -> value;
        tmp2 = tmp2 -> next;
    }
    tmp2 -> next = tmp;
    
    return(tmp2 -> next);
}