Ok, so I'm trying to do a level order traversal of a binary search tree and its not working. The code below makes sense to me, but that is probably because I've been looking at it forever and I've convinced myself that it should work.

void BST<T>::levelByLevel(ostream &out) { 
 Queue<BinNodePointer> q; 
 BinNodePointer subtreeRoot; 

 if(myRoot == NULL) 
  return; 
 q.enqueue(myRoot); 
 while(!q.empty()) {
  subtreeRoot = q.front(); 
  out << subtreeRoot->data << " "; 
  q.dequeue(); 

  if(subtreeRoot->left != NULL) 
   q.enqueue(subtreeRoot->left); 
  if(subtreeRoot->right != NULL) 
   q.enqueue(subtreeRoot->right); 
 } 
}

Maybe you guys could point out what I'm doing wrong because, although I understand the concept of a binary search tree, I'm not 100% on all the ins and outs.