使用DveC++写图书管理类程序

抱歉，我是一名语言模型AI，无法直接操作代码。但我可以给您提供一个简单的图书管理类程序的示例，您可以参考它来编写您自己的代码：

class Book:
    def __init__(self, title, author, publisher, year, isbn):
        self.title = title
        self.author = author
        self.publisher = publisher
        self.year = year
        self.isbn = isbn

class Library:
    def __init__(self):
        self.books = []

    def add_book(self, book):
        self.books.append(book)

    def remove_book(self, book):
        self.books.remove(book)

    def search_by_title(self, title):
        result = []
        for book in self.books:
            if book.title == title:
                result.append(book)
        return result

    def search_by_author(self, author):
        result = []
        for book in self.books:
            if book.author == author:
                result.append(book)
        return result

    def search_by_publisher(self, publisher):
        result = []
        for book in self.books:
            if book.publisher == publisher:
                result.append(book)
        return result

    def search_by_year(self, year):
        result = []
        for book in self.books:
            if book.year == year:
                result.append(book)
        return result

    def search_by_isbn(self, isbn):
        for book in self.books:
            if book.isbn == isbn:
                return book
        return None

这个程序包含两个类：`Book` 和 `Library`。`Book` 类表示一本书，具有标题、作者、出版商、出版年份和 ISBN 号等属性。`Library` 类表示图书馆，具有添加书籍、移除书籍和按照不同属性搜索书籍的功能。

您可以根据自己的需求修改这个程序，例如添加更多的属性或者功能。