#include <iostream>
#include <string>
using namespace std;

class TreeNode
{
public:
    TreeNode():count(0),left(0),right(0){cout<<"TreeNode()"<<endl;}
    //此处将构造left、right的初始化放在初始化列表中（即：left（new TreeNode(*lef),right(new TreeNode(*rig)）为什么编译无法通过？？？
    TreeNode(const string val,const int cnt,const TreeNode *lef,const TreeNode *rig):value(val),count(cnt)
{
    left=new TreeNode(*lef);
    right=new TreeNode(*rig);
    cout<<"TreeNode(,,,)"<<endl;
}
    TreeNode(const TreeNode& org);
    ~TreeNode();
    string getValue(){return value;}
private:
    string value;
    int count;
    TreeNode *left;
    TreeNode *right;
};

TreeNode::TreeNode(const TreeNode& org)
{
    cout<<"TreeNode(const TreeNode& org)"<<endl;
    count=org.count;
    if (org.left)
    {
        left=new TreeNode(*org.left);
    }
    else
        left=0;
    if (org.right)
    {
        right=new TreeNode(*org.right);
    }
    else 
        right=0;

}

TreeNode::~TreeNode()
{
    cout<<"~TreeNode"<<endl;
    if (left)
    {
        delete left;
    }
    if(right)
    {
        delete right;
    }
}

int main()
{
    TreeNode tn;
    TreeNode left;
    TreeNode right;
    TreeNode root("root",1,&left,&right);
}