去年帮人写的课程作业，纯c++语言

功能包括：图书录入、列出；保存、输出；信息浏览、检索

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图书信息包括：登录号、书名、作者名、分类号、出版单位、出版时间、价格等。试设计一图书信息管理系统，使之能提供以下功能：1.图书信息录入功能（图书信息用文件保存）——输入。2.图书信息浏览功能——输出。3.查询或排序功能：——算法：a按书名查询 b按作者名查询.-Last year' s course work to help people write pure c++ language features include: Book entry, list　preservation, output　information browsing, retrieval ========= book information, including: registration number, title, author name, CLC, publishers, publishing time, price and so on. Try to design a library information management system so that it can provide the following features: 1. Book information input function (book information stored with the file)- input. 2. Book Information browsing- output. 3. Query or sort functions:- Algorithm: a query b by title by author name query.