帮我用C++实现一个的完整图书管理系统，需要在控制台进行操作，需要有代码注释，要有书籍类、图书类型类、图书类，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，这是一个比较复杂的项目，需要一步步来实现。我们可以先创建一个Book类，包含图书的编号、书名、作者、价格和库存量等信息。代码如下：

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

class Book {
public:
    string number;   // 图书编号
    string name;     // 书名
    string author;   // 作者
    double price;    // 价格
    int count;       // 库存量

    Book(string num, string na, string au, double pr, int co) {
        number = num;
        name = na;
        author = au;
        price = pr;
        count = co;
    }
};

接着，我们创建一个BookType类，包含图书类型的编号和名称等信息。代码如下：

class BookType {
public:
    string number;   // 图书类型编号
    string name;     // 图书类型名称

    BookType(string num, string na) {
        number = num;
        name = na;
    }
};

接着，我们在Book类中添加一个成员变量，表示图书类型。代码如下：

class Book {
public:
    string number;        // 图书编号
    string name;          // 书名
    string author;        // 作者
    double price;         // 价格
    int count;            // 库存量
    BookType bookType;    // 图书类型

    Book(string num, string na, string au, double pr, int co, BookType bt) {
        number = num;
        name = na;
        author = au;
        price = pr;
        count = co;
        bookType = bt;
    }
};

然后，我们创建一个BookManager类，包含对图书信息的添加、修改、删除和查找等操作。代码如下：

#include <vector>

class BookManager {
public:
    vector<Book> books;    // 存储所有图书信息

    void add(Book book) {
        books.push_back(book);
    }

    void remove(string number) {
        for (auto iter = books.begin(); iter != books.end(); iter++) {
            if ((*iter).number == number) {
                books.erase(iter);
                break;
            }
        }
    }

    void modify(string number, Book book) {
        for (auto iter = books.begin(); iter != books.end(); iter++) {
            if ((*iter).number == number) {
                (*iter).name = book.name;
                (*iter).author = book.author;
                (*iter).price = book.price;
                (*iter).count = book.count;
                (*iter).bookType = book.bookType;
                break;
            }
        }
    }

    Book find(string number) {
        for (auto iter = books.begin(); iter != books.end(); iter++) {
            if ((*iter).number == number) {
                return (*iter);
            }
        }
        return Book("", "", "", 0, 0, BookType("", ""));
    }

    void sortByName() {
        sort(books.begin(), books.end(), [](Book a, Book b) {
            return a.name < b.name;
        });
    }

    void sortByNumber() {
        sort(books.begin(), books.end(), [](Book a, Book b) {
            return a.number < b.number;
        });
    }

    void saveToFile(string filename) {
        ofstream out(filename);
        for (auto book : books) {
            out << book.number << "," << book.name << "," << book.author << "," << book.price << "," << book.count << "," << book.bookType.number << "," << book.bookType.name << endl;
        }
        out.close();
    }

    void readFromFile(string filename) {
        ifstream in(filename);
        string line;
        while (getline(in, line)) {
            stringstream ss(line);
            string num, name, author, typeNum, typeName;
            double price;
            int count;
            getline(ss, num, ',');
            getline(ss, name, ',');
            getline(ss, author, ',');
            ss >> price;
            ss.ignore();
            ss >> count;
            ss.ignore();
            getline(ss, typeNum, ',');
            getline(ss, typeName, ',');
            BookType bt(typeNum, typeName);
            Book book(num, name, author, price, count, bt);
            add(book);
        }
        in.close();
    }
};

最后，我们创建一个main函数，来测试上述功能。代码如下：

int main() {
    BookType bt1("001", "小说");
    BookType bt2("002", "科技");
    Book book1("001", "三体", "刘慈欣", 29.99, 100, bt2);
    Book book2("002", "红楼梦", "曹雪芹", 19.99, 50, bt1);
    Book book3("003", "C++程序设计", "谭浩强", 39.99, 80, bt2);

    BookManager bm;
    bm.add(book1);
    bm.add(book2);
    bm.add(book3);

    bm.sortByName();
    for (auto book : bm.books) {
        cout << book.number << " " << book.name << " " << book.author << " " << book.price << " " << book.count << " " << book.bookType.number << " " << book.bookType.name << endl;
    }

    bm.sortByNumber();
    for (auto book : bm.books) {
        cout << book.number << " " << book.name << " " << book.author << " " << book.price << " " << book.count << " " << book.bookType.number << " " << book.bookType.name << endl;
    }

    bm.remove("001");

    Book book = bm.find("002");
    cout << book.name << endl;

    bm.modify("002", Book("002", "红楼梦2", "曹雪芹", 29.99, 200, bt1));
    book = bm.find("002");
    cout << book.name << endl;

    bm.saveToFile("books.txt");

    bm.books.clear();
    bm.readFromFile("books.txt");
    for (auto book : bm.books) {
        cout << book.number << " " << book.name << " " << book.author << " " << book.price << " " << book.count << " " << book.bookType.number << " " << book.bookType.name << endl;
    }

    return 0;
}

这个程序已经可以完成基本的图书管理功能了，包括对图书信息的添加、修改、删除和查找，以及对图书信息的排序和保存/读取功能。需要注意的是，保存到文件和读取文件的格式需要保持一致。