帮我实现一个C++的图书管理系统

好的，下面是一个简单的图书管理系统的C++代码示例：

#include <iostream>
#include <vector>
#include <string>

using namespace std;

class Book {
private:
    string title;
    string author;
    string publisher;
    int publicationYear;
    int numPages;
public:
    Book(string title, string author, string publisher, int publicationYear, int numPages) {
        this->title = title;
        this->author = author;
        this->publisher = publisher;
        this->publicationYear = publicationYear;
        this->numPages = numPages;
    }
    string getTitle() {
        return title;
    }
    string getAuthor() {
        return author;
    }
    string getPublisher() {
        return publisher;
    }
    int getPublicationYear() {
        return publicationYear;
    }
    int getNumPages() {
        return numPages;
    }
};

class Library {
private:
    vector<Book> books;
public:
    void addBook(Book book) {
        books.push_back(book);
    }
    void removeBook(string title) {
        for (int i = 0; i < books.size(); i++) {
            if (books[i].getTitle() == title) {
                books.erase(books.begin() + i);
                break;
            }
        }
    }
    void printBooks() {
        for (int i = 0; i < books.size(); i++) {
            cout << "Title: " << books[i].getTitle() << endl;
            cout << "Author: " << books[i].getAuthor() << endl;
            cout << "Publisher: " << books[i].getPublisher() << endl;
            cout << "Publication Year: " << books[i].getPublicationYear() << endl;
            cout << "Number of Pages: " << books[i].getNumPages() << endl << endl;
        }
    }
};

int main() {
    Library library;
    Book book1("The Catcher in the Rye", "J.D. Salinger", "Little, Brown and Company", 1951, 277);
    Book book2("1984", "George Orwell", "Secker & Warburg", 1949, 328);
    Book book3("To Kill a Mockingbird", "Harper Lee", "J.B. Lippincott & Co.", 1960, 281);
    library.addBook(book1);
    library.addBook(book2);
    library.addBook(book3);
    library.printBooks();
    library.removeBook("1984");
    library.printBooks();
    return 0;
}

这个图书管理系统有两个类：`Book`和`Library`。`Book`类表示一本书，包含书名、作者、出版社、出版年份和页数等信息，`Library`类表示图书馆，包含一个`Book`对象的向量，可以添加、删除和打印书籍信息。在`main`函数中，我们使用`Library`类来管理三本书，并打印出它们的信息。然后，我们删除了一本书并再次打印了所有的书籍信息。