说明：  图书管理系统 设计内容：设计一个实用的小型图书管理程序，设计图书的索引卡片。对图书的在库和借出状态要有所表示。能提供读者信息查询及提供按图书的编号、书名、责任者、出版社等途径的检索。
(Library Management System: Design a practical small book management program, design books index cards. On the books in the library and lending status to be said. Provides information inquiries and provide the reader by book number, title, responsible, publishers and other means of retrieval.)