3-binary_tree_delete.c

#include "binary_trees.h"

/**
 * binary_tree_delete - deletes an entire binary tree
 *
 * @tree: a pointer to the root node of the tree to delete
 *
 * postorder traversal will be used to traverse the tree
 *
 * if tree is NULL, do nothing
 */
void binary_tree_delete(binary_tree_t *tree)
{
	if (tree == NULL)
		return;
	binary_tree_delete(tree->left);
	binary_tree_delete(tree->right);
	free(tree);
	tree = NULL;
}