finding Nth Node in linked list..

  int GetNth(struct node* head, int index)  {

         struct node* current = head;
         int count = 0; // the index of the node we're currently looking at

         while (current != NULL)   {                  

                  if (count == index) return(current->data);
                       count++;
                  current = current->next;
         }
        assert(0); // if we get to this line, the caller was asking
        // for a non-existent element so we assert fail.
  }