编写一个程序btree.cpp，实现二叉树的链式存储结构以及二叉树的各种基本运算：CreateBTree、DestroyBTree(销毁二叉树)、FindNode（查找结点）、BTHeight（求二叉树的高度）、DispBTree（用括号表示法输出二叉树）、PreOrder（先序遍历）、InOrder（中序遍历）、PostOrder（后序遍历），LevelOrder（层次遍历）并在此基础上设计一个程序exp5-1.cpp，完成以下功能

好的，我知道了。以下是btree.cpp的代码实现：

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

// 二叉树节点的结构体
struct TreeNode {
    char data;
    TreeNode *left;
    TreeNode *right;

    TreeNode(char d) : data(d), left(NULL), right(NULL) {}
};

// 创建二叉树
TreeNode *CreateBTree() {
    char c;
    cin >> c;
    if (c == '#') {
        return NULL;
    }

    TreeNode *root = new TreeNode(c);
    root->left = CreateBTree();
    root->right = CreateBTree();

    return root;
}

// 销毁二叉树
void DestroyBTree(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    DestroyBTree(root->left);
    DestroyBTree(root->right);
    delete root;
}

// 查找结点
TreeNode *FindNode(TreeNode *root, char target) {
    if (root == NULL) {
        return NULL;
    }

    if (root->data == target) {
        return root;
    }

    TreeNode *left = FindNode(root->left, target);
    if (left != NULL) {
        return left;
    }

    TreeNode *right = FindNode(root->right, target);
    if (right != NULL) {
        return right;
    }

    return NULL;
}

// 求二叉树的高度
int BTHeight(TreeNode *root) {
    if (root == NULL) {
        return 0;
    }

    int leftHeight = BTHeight(root->left);
    int rightHeight = BTHeight(root->right);

    return max(leftHeight, rightHeight) + 1;
}

// 用括号表示法输出二叉树
void DispBTree(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    cout << root->data;
    if (root->left != NULL || root->right != NULL) {
        cout << "(";
        DispBTree(root->left);
        if (root->right != NULL) {
            cout << ",";
        }
        DispBTree(root->right);
        cout << ")";
    }
}

// 先序遍历
void PreOrder(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    cout << root->data << " ";
    PreOrder(root->left);
    PreOrder(root->right);
}

// 中序遍历
void InOrder(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    InOrder(root->left);
    cout << root->data << " ";
    InOrder(root->right);
}

// 后序遍历
void PostOrder(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    PostOrder(root->left);
    PostOrder(root->right);
    cout << root->data << " ";
}

// 层次遍历
void LevelOrder(TreeNode *root) {
    if (root == NULL) {
        return;
    }

    queue<TreeNode *> q;
    q.push(root);

    while (!q.empty()) {
        TreeNode *cur = q.front();
        q.pop();

        cout << cur->data << " ";

        if (cur->left != NULL) {
            q.push(cur->left);
        }

        if (cur->right != NULL) {
            q.push(cur->right);
        }
    }
}

接下来是exp5-1.cpp的代码实现，实现以下功能：

1. 输入一个二叉树，输出二叉树的高度
2. 输入一个二叉树，输出二叉树的节点总数
3. 输入一个二叉树，判断二叉树是否为完全二叉树
4. 输入一个二叉树和字符 x，查找节点值为 x 的节点，并输出该节点的左右孩子节点（如果有的话）

#include <iostream>
#include <queue>
#include "btree.cpp"
using namespace std;

// 计算二叉树的节点总数
int CountNodes(TreeNode *root) {
    if (root == NULL) {
        return 0;
    }

    return CountNodes(root->left) + CountNodes(root->right) + 1;
}

// 判断二叉树是否为完全二叉树
bool IsCompleteBTree(TreeNode *root) {
    if (root == NULL) {
        return true;
    }

    queue<TreeNode *> q;
    q.push(root);

    bool hasEmptyNode = false;
    while (!q.empty()) {
        TreeNode *cur = q.front();
        q.pop();

        if (cur == NULL) {
            hasEmptyNode = true;
        } else {
            if (hasEmptyNode) {
                return false;
            }

            q.push(cur->left);
            q.push(cur->right);
        }
    }

    return true;
}

// 查找节点并输出左右孩子节点
void FindNodeAndDispChildren(TreeNode *root, char target) {
    TreeNode *node = FindNode(root, target);
    if (node == NULL) {
        cout << "Node not found" << endl;
        return;
    }

    if (node->left != NULL) {
        cout << "Left child: " << node->left->data << endl;
    } else {
        cout << "No left child" << endl;
    }

    if (node->right != NULL) {
        cout << "Right child: " << node->right->data << endl;
    } else {
        cout << "No right child" << endl;
    }
}

int main() {
    cout << "Please input a binary tree: ";
    TreeNode *root = CreateBTree();

    // 计算二叉树的高度
    int height = BTHeight(root);
    cout << "Height of binary tree: " << height << endl;

    // 计算二叉树的节点总数
    int nodeCount = CountNodes(root);
    cout << "Total nodes of binary tree: " << nodeCount << endl;

    // 判断二叉树是否为完全二叉树
    bool isComplete = IsCompleteBTree(root);
    if (isComplete) {
        cout << "The binary tree is a complete binary tree" << endl;
    } else {
        cout << "The binary tree is not a complete binary tree" << endl;
    }

    // 查找节点并输出左右孩子节点
    char target;
    cout << "Please input the target node: ";
    cin >> target;
    FindNodeAndDispChildren(root, target);

    DestroyBTree(root);
    return 0;
}

这样就完成了所有的功能。