说明：  图书馆C++简单实现源码，功能较为简单，但具有基本增删改查，没有使用数据库，仅简单C++源代码，初学者使用
(Library C++ simple implementation source code, the function is relatively simple, but has the basic increase and delete to check, did not use the database, simple C++ source code, beginners use.)