C语言实现计算树的深度的方法

/* * Copyright (c) 2011 alexingcool. All Rights Reserved. */ #include <iostream>using namespace std;struct Node { Node(int i = 0, Node *l = NULL, Node *r = NULL) : data(i), left(l), right(r) {} int data; Node *left; Node *right;};Node* Construct() { Node *node4 = new Node(7, NULL, new Node(3)); Node *node3 = new Node(4); Node *node2 = new Node(12); Node *node1 = new Node(5, node3, node4); Node *root = new Node(10, node1, node2); return root;}int GetTreeHeight(Node *root) { if(root == NULL) return 0; return max(GetTreeHeight(root->left) + 1, GetTreeHeight(root->right) + 1);}void main() { Node *root = Construct(); int height = GetTreeHeight(root); cout << "tree height is: " << height << endl;}