两颗二叉树深度比较出问题了！！！

Question

#两颗二叉树比较深度，没有反应，建立一颗二叉树求深度是可以的，俩可不知道为什么就错了，希望大佬可以帮忙看看啊！！！

#include <iostream>
using namespace std;
struct BiNode
{
    char data;
    BiNode* lchild, * rchild;
};
class BiTree
{
private:
    BiNode* creat(BiNode* bt);
    int depth(BiNode* bt);
    void relase(BiNode* bt);
    BiNode* root;
public:
    BiTree() { root = creat(root); }
    ~BiTree() { relase(root); };
    int depth(){return  depth(root);}
};
BiNode* BiTree::creat(BiNode* bt)
{
    char ch;
    ch = getchar();
    if (ch == '#')
    {
        bt = NULL;
    }
    else
    {
        bt = new BiNode;
        bt->data = ch;
        bt->lchild = creat(bt->lchild);
        bt->rchild = creat(bt->rchild);
    }
    return bt;
}
void BiTree::relase(BiNode* bt)
{
    if (bt)
    {
        relase(bt->lchild);
        relase(bt->rchild);
        delete(bt);
    }
}
int BiTree::depth(BiNode* bt)
{
     int deep = 0;
     if(bt)
     {
          int lchilddeep = depth(bt->lchild);
          int rchilddeep = depth(bt->rchild);
          deep = lchilddeep>=rchilddeep?lchilddeep+1:rchilddeep+1;
     }
     return deep;
}

int main()
{
    BiTree t1,t2;
    int max;
    max=t1.depth()>t2.depth()?t1.depth():t2.depth();
    cout<<max<<endl;
    return 0;
}

Answer 1

https://blog.csdn.net/weixin_40853073/article/details/81458863