void postorder(BinTreeType *aTree)
{
  BinTreeType *tempTree;
  
  if (aTree->root != NULL) {
    BinTreeType *tempTree;
    tempTree->root = aTree->root->left;
    postorder(tempTree);
    tempTree->root = aTree->root->right;
    postorder(tempTree);
    printNode(aTree->root->value);
    free(tempTree); /*Perito?*/
  }
  
}