商品管理系统

代码说明：

说明：  小型的商品管理系统，提供商品和供应商的查询、添加、删除、编辑等功能，以及对商品管理系统业务的权限管理。本系统使用链表结构操作数据，提高了数据处理的效率。设计若干类和文件实现，用链表来存储商品的基本信息以及供应商，系统角色信息等。(The small commodity management system provides the query, addition, deletion, editing and other functions of commodities and suppliers, as well as the right management of the business of the commodity management system. The system uses linked list structure to operate data, which improves the efficiency of data processing. Some classes and files are designed to store the basic information of goods and the information of suppliers and system roles.)