c++实现图书管理系统代码

在C++中实现一个简单的图书管理系统，我们可以创建一个基础的设计，包括书籍类(Book)，图书馆类(Library)以及用户类(User)。这里是一个基本的框架示例：

#include <iostream>
#include <vector>

// 书籍类
class Book {
public:
    std::string title;
    std::string author;
    int quantity;

    // 构造函数
    Book(const std::string& title, const std::string& author, int quantity)
        : title(title), author(author), quantity(quantity) {}

    // 显示书的信息
    void displayInfo() {
        std::cout << "Title: " << title << ", Author: " << author << ", Quantity: " << quantity << std::endl;
    }
};

// 图书馆类
class Library {
private:
    std::vector<Book> books;

public:
    void addBook(Book book) {
        books.push_back(book);
    }

    void removeBook(const std::string& title) {
        for (auto it = books.begin(); it != books.end(); ++it) {
            if (it->title == title) {
                books.erase(it);
                break;
            }
        }
    }

    // 其他方法如搜索书籍等...
};

// 用户类
class User {
public:
    void borrowBook(const std::string& title) {
        for (const auto& book : library.books) {
            if (book.title == title && book.quantity > 0) {
                book.quantity--;
                std::cout << "Borrowed: " << book.title << std::endl;
                break;
            }
        }
    }

    void returnBook(const std::string& title) {
        for (auto& book : library.books) {
            if (book.title == title) {
                book.quantity++;
                std::cout << "Returned: " << book.title << std::endl;
                break;
            }
        }
    }

private:
    Library library;
};

int main() {
    Book book1("The Great Gatsby", "F. Scott Fitzgerald", 5);
    Book book2("To Kill a Mockingbird", "Harper Lee", 3);

    Library lib;
    lib.addBook(book1);
    lib.addBook(book2);

    User user;
    user.library = lib;

    // 用户操作
    user.borrowBook("The Great Gatsby");
    user.returnBook("To Kill a Mockingbird");

    return 0;
}