Kth element in Linked List

kthLinkedList.cpp

Node* findKthToLastElement (Node* node, unsigned short k)
{
    Node* secondRunner = node;
    for(unsigned short i = 0; i < k; ++i)
    {
        if (secondRunner->next != NULL)
            secondRunner = secondRunner->next;
        else
            return NULL;
    }
    while (secondRunner)
    {
        secondRunner = secondRunner->next;
        node = node->next;
    }
    return node;
}