帮我用C++语言实现一个的图书管理系统，在控制台进行操作，代码需要有详细的代码注释，要有书籍类、图书类型类、图书类，系统要有这些功能： 1）建立书籍类、图书类型类、图书类 2）书籍、图书类型、图书信息的初始化 3）书籍、图书类型、图书信息的添加、修改、删除、查找 4）图书信息的输出 5）对图书信息按编号、书名排序 6）将图书信息保存为文件 7）读入保存的图书信息

好的，这个任务比较复杂，我们需要分步骤来完成，下面是一个详细的实现代码及注释：

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;

// 定义图书类型类
class BookType {
public:
    string type; // 图书类型
    int borrowDays; // 借阅周期

    BookType(string type, int borrowDays) { // 构造函数
        this->type = type;
        this->borrowDays = borrowDays;
    }
};

// 定义书籍类
class Book {
public:
    string name; // 书名
    string author; // 作者
    string ISBN; // ISBN号
    double price; // 价格
    BookType* type; // 图书类型

    Book(string name, string author, string ISBN, double price, BookType* type) { // 构造函数
        this->name = name;
        this->author = author;
        this->ISBN = ISBN;
        this->price = price;
        this->type = type;
    }

    void displayInfo() { // 输出书籍信息
        cout << "书名：" << name << endl;
        cout << "作者：" << author << endl;
        cout << "ISBN号：" << ISBN << endl;
        cout << "价格：" << price << " 元" << endl;
        cout << "图书类型：" << type->type << endl;
        cout << "借阅周期：" << type->borrowDays << " 天" << endl;
    }
};

// 定义图书管理系统类
class BookManager {
private:
    vector<Book*> books; // 存储所有书籍的指针
    vector<BookType*> types; // 存储所有图书类型的指针

public:
    void init() { // 初始化图书信息
        BookType* type1 = new BookType("小说", 30);
        types.push_back(type1);
        BookType* type2 = new BookType("科技", 60);
        types.push_back(type2);
        Book* book1 = new Book("红楼梦", "曹雪芹", "9787532735807", 15.5, type1);
        books.push_back(book1);
        Book* book2 = new Book("三体", "刘慈欣", "9787536692930", 28.8, type2);
        books.push_back(book2);
    }

    void addBook() { // 添加书籍信息
        cout << "请输入书名：";
        string name;
        cin >> name;
        cout << "请输入作者：";
        string author;
        cin >> author;
        cout << "请输入ISBN号：";
        string ISBN;
        cin >> ISBN;
        cout << "请输入价格：";
        double price;
        cin >> price;
        cout << "请选择图书类型（输入数字）：" << endl;
        for (int i = 0; i < types.size(); i++) {
            cout << i + 1 << ". " << types[i]->type << endl;
        }
        int typeIndex;
        cin >> typeIndex;
        BookType* type = types[typeIndex - 1];
        Book* book = new Book(name, author, ISBN, price, type);
        books.push_back(book);
        cout << "添加成功！" << endl;
    }

    void updateBook() { // 修改书籍信息
        cout << "请输入要修改的书籍ISBN号：";
        string ISBN;
        cin >> ISBN;
        bool found = false;
        for (int i = 0; i < books.size(); i++) {
            if (books[i]->ISBN == ISBN) {
                cout << "请输入新的书名（原书名：" << books[i]->name << "）：";
                string name;
                cin >> name;
                books[i]->name = name;
                cout << "请输入新的作者（原作者：" << books[i]->author << "）：";
                string author;
                cin >> author;
                books[i]->author = author;
                cout << "请输入新的ISBN号（原ISBN号：" << books[i]->ISBN << "）：";
                string ISBN;
                cin >> ISBN;
                books[i]->ISBN = ISBN;
                cout << "请输入新的价格（原价格：" << books[i]->price << "）：";
                double price;
                cin >> price;
                books[i]->price = price;
                cout << "请选择新的图书类型（输入数字）：" << endl;
                for (int j = 0; j < types.size(); j++) {
                    cout << j + 1 << ". " << types[j]->type << endl;
                }
                int typeIndex;
                cin >> typeIndex;
                BookType* type = types[typeIndex - 1];
                books[i]->type = type;
                found = true;
                break;
            }
        }
        if (!found) {
            cout << "未找到该书籍！" << endl;
        } else {
            cout << "修改成功！" << endl;
        }
    }

    void deleteBook() { // 删除书籍信息
        cout << "请输入要删除的书籍ISBN号：";
        string ISBN;
        cin >> ISBN;
        bool found = false;
        for (int i = 0; i < books.size(); i++) {
            if (books[i]->ISBN == ISBN) {
                books.erase(books.begin() + i);
                found = true;
                break;
            }
        }
        if (!found) {
            cout << "未找到该书籍！" << endl;
        } else {
            cout << "删除成功！" << endl;
        }
    }

    void findBook() { // 查找书籍信息
        cout << "请输入要查找的书籍ISBN号：";
        string ISBN;
        cin >> ISBN;
        bool found = false;
        for (int i = 0; i < books.size(); i++) {
            if (books[i]->ISBN == ISBN) {
                books[i]->displayInfo();
                found = true;
                break;
            }
        }
        if (!found) {
            cout << "未找到该书籍！" << endl;
        }
    }

    void display() { // 输出所有书籍信息
        for (int i = 0; i < books.size(); i++) {
            books[i]->displayInfo();
            cout << endl;
        }
    }

    void sort(int sortType) { // 按编号或书名排序
        if (sortType == 1) { // 按编号排序
            sort(books.begin(), books.end(), [](Book* a, Book* b) { return a->ISBN < b->ISBN; });
        } else if (sortType == 2) { // 按书名排序
            sort(books.begin(), books.end(), [](Book* a, Book* b) { return a->name < b->name; });
        }
        cout << "排序成功！" << endl;
    }

    void saveToFile() { // 将图书信息保存到文件中
        ofstream outfile("books.txt");
        for (int i = 0; i < books.size(); i++) {
            outfile << books[i]->name << "," << books[i]->author << "," << books[i]->ISBN << "," << books[i]->price << "," << books[i]->type->type << "," << books[i]->type->borrowDays << endl;
        }
        outfile.close();
        cout << "保存成功！" << endl;
    }

    void loadFromFile() { // 从文件中读取图书信息
        ifstream infile("books.txt");
        string line;
        while (getline(infile, line)) {
            string name, author, ISBN, type;
            int borrowDays;
            double price;
            int commaIndex = line.find(",");
            name = line.substr(0, commaIndex);
            line = line.substr(commaIndex + 1);
            commaIndex = line.find(",");
            author = line.substr(0, commaIndex);
            line = line.substr(commaIndex + 1);
            commaIndex = line.find(",");
            ISBN = line.substr(0, commaIndex);
            line = line.substr(commaIndex + 1);
            commaIndex = line.find(",");
            price = stod(line.substr(0, commaIndex));
            line = line.substr(commaIndex + 1);
            commaIndex = line.find(",");
            type = line.substr(0, commaIndex);
            borrowDays = stoi(line.substr(commaIndex + 1));
            BookType* bookType;
            for (int i = 0; i < types.size(); i++) {
                if (types[i]->type == type) {
                    bookType = types[i];
                    break;
                }
            }
            Book* book = new Book(name, author, ISBN, price, bookType);
            books.push_back(book);
        }
        infile.close();
        cout << "读取成功！" << endl;
    }
};

int main() {
    BookManager bookManager;
    bookManager.init(); // 初始化图书信息

    while (true) {
        cout << "请选择要执行的操作（输入数字）：" << endl;
        cout << "1. 添加书籍" << endl;
        cout << "2. 修改书籍信息" << endl;
        cout << "3. 删除书籍" << endl;
        cout << "4. 查找书籍信息" << endl;
        cout << "5. 输出所有书籍信息" << endl;
        cout << "6. 按编号排序" << endl;
        cout << "7. 按书名排序" << endl;
        cout << "8. 将图书信息保存到文件" << endl;
        cout << "9. 从文件中读取图书信息" << endl;
        cout << "0. 退出程序" << endl;
        int choice;
        cin >> choice;
        switch (choice) {
            case 1: // 添加书籍信息
                bookManager.addBook();
                break;
            case 2: // 修改书籍信息
                bookManager.updateBook();
                break;
            case 3: // 删除书籍信息
                bookManager.deleteBook();
                break;
            case 4: // 查找书籍信息
                bookManager.findBook();
                break;
            case 5: // 输出所有书籍信息
                bookManager.display();
                break;
            case 6: // 按编号排序
                bookManager.sort(1);
                break;
            case 7: // 按书名排序
                bookManager.sort(2);
                break;
            case 8: // 将图书信息保存到文件
                bookManager.saveToFile();
                break;
            case 9: // 从文件中读取图书信息
                bookManager.loadFromFile();
                break;
            case 0: // 退出程序
                return 0;
            default:
                cout << "输入错误，请重新输入！" << endl;
                break;
        }
    }

    return 0;
}

注意：上述代码中，为了简化实现，没有考虑重复添加图书的情况，实际应用中需要进行判断并给出提示。同时，为了方便存储和读取，将图书信息保存到了一个文本文件中，实际应用中可以使用数据库等方式进行存储。