写一个图书管理系统c++

好的，这里是一个简单的图书管理系统的C++代码示例：

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

using namespace std;

class Book {
public:
    string title;
    string author;
    int year;

    Book(string title, string author, int year) {
        this->title = title;
        this->author = author;
        this->year = year;
    }
};

class Library {
public:
    vector<Book> books;

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

    void removeBook(string title) {
        for (int i = 0; i < books.size(); i++) {
            if (books[i].title == title) {
                books.erase(books.begin() + i);
                break;
            }
        }
    }

    void displayBooks() {
        for (int i = 0; i < books.size(); i++) {
            cout << "Title: " << books[i].title << endl;
            cout << "Author: " << books[i].author << endl;
            cout << "Year: " << books[i].year << endl;
            cout << endl;
        }
    }
};

int main() {
    Library library;

    Book book1("The Catcher in the Rye", "J.D. Salinger", 1951);
    Book book2("To Kill a Mockingbird", "Harper Lee", 1960);
    Book book3("1984", "George Orwell", 1949);

    library.addBook(book1);
    library.addBook(book2);
    library.addBook(book3);

    cout << "Displaying all books in library:" << endl;
    library.displayBooks();

    cout << "Removing 'To Kill a Mockingbird' from library." << endl;
    library.removeBook("To Kill a Mockingbird");

    cout << "Displaying all books in library:" << endl;
    library.displayBooks();

    return 0;
}

这个图书管理系统使用了两个类，`Book`和`Library`。`Book`类表示一本书，包含书名、作者和出版年份等属性。`Library`类表示整个图书馆，包含一个`vector`存储所有书籍，还实现了添加、删除和展示书籍的功能。

在`main`函数中，我们创建了三本书，并将它们添加到图书馆中。然后展示了所有书籍，再删除了其中一本，最后再次展示所有书籍。

这只是一个简单的示例，实际的图书管理系统还需要考虑更多的功能和细节。