11-binary_tree_size.c

#include "binary_trees.h"

/**
 * binary_tree_size - calculates size of binary tree
 * @tree: pointer to root node
 * Return: If tree is null return 0, else return size
 */

size_t binary_tree_size(const binary_tree_t *tree)
{
	if (!tree)
		return (0);
	return (binary_tree_size(tree->left) + 1 + binary_tree_size(tree->right));
}