图书管理系统c++代码

根据提供的引用内容，以下是一个简单的图书管理系统的C++代码示例：

#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

class CBook {
private:
    string title;
    string author;
    int quantity;

public:
    CBook(string t, string a, int q) {
        title = t;
        author = a;
        quantity = q;
    }

    string getTitle() {
        return title;
    }

    string getAuthor() {
        return author;
    }

    int getQuantity() {
        return quantity;
    }
};

class CUser {
protected:
    string name;

public:
    CUser(string n) {
        name = n;
    }

    string getName() {
        return name;
    }
};

class CStudent : public CUser {
public:
    CStudent(string n) : CUser(n) {}
};

class CTeacher : public CUser {
public:
    CTeacher(string n) : CUser(n) {}
};

class CAdministrator {
public:
    void addBook(vector<CBook>& books, string title, string author, int quantity) {
        CBook newBook(title, author, quantity);
        books.push_back(newBook);
    }

    void viewBorrowers(vector<CUser>& users) {
        cout << "Current borrowers:" << endl;
        for (CUser user : users) {
            cout << user.getName() << endl;
        }
    }

    void viewBooks(vector<CBook>& books) {
        cout << "Current books:" << endl;
        for (CBook book : books) {
            cout << "Title: " << book.getTitle() << ", Author: " << book.getAuthor() << ", Quantity: " << book.getQuantity() << endl;
        }
    }
};

class CManagementBooks {
public:
    void borrowBook(vector<CBook>& books, vector<CUser>& users, string bookTitle, string userName) {
        bool bookFound = false;
        bool userFound = false;

        for (CBook& book : books) {
            if (book.getTitle() == bookTitle && book.getQuantity() > 0) {
                bookFound = true;
                book.quantity--;
                break;
            }
        }

        for (CUser& user : users) {
            if (user.getName() == userName) {
                userFound = true;
                break;
            }
        }

        if (bookFound && userFound) {
            cout << "Book borrowed successfully!" << endl;
        } else {
            cout << "Book or user not found, or book is not available." << endl;
        }
    }

    void returnBook(vector<CBook>& books, vector<CUser>& users, string bookTitle, string userName) {
        bool bookFound = false;
        bool userFound = false;

        for (CBook& book : books) {
            if (book.getTitle() == bookTitle) {
                bookFound = true;
                book.quantity++;
                break;
            }
        }

        for (CUser& user : users) {
            if (user.getName() == userName) {
                userFound = true;
                break;
            }
        }

        if (bookFound && userFound) {
            cout << "Book returned successfully!" << endl;
        } else {
            cout << "Book or user not found." << endl;
        }
    }
};

int main() {
    vector<CBook> books;
    vector<CUser> users;
    CAdministrator admin;
    CManagementBooks bookManager;

    // 添加书籍
    admin.addBook(books, "Book 1", "Author 1", 5);
    admin.addBook(books, "Book 2", "Author 2", 3);
    admin.addBook(books, "Book 3", "Author 3", 2);

    // 添加用户
    CStudent student("John");
    CTeacher teacher("Jane");
    users.push_back(student);
    users.push_back(teacher);

    // 借书
    bookManager.borrowBook(books, users, "Book 1", "John");
    bookManager.borrowBook(books, users, "Book 2", "Jane");

    // 还书
    bookManager.returnBook(books, users, "Book 1", "John");

    // 查看当前借阅情况和图书信息
    admin.viewBorrowers(users);
    admin.viewBooks(books);

    return 0;
}