这是一个界面简单的消费管理系统，用到了对文件的操作，功能有添加，浏览，和计算消费额，还不错！-This is a simple consumer interface management system, used for file operations, functions to add, view, and calculate consumption, not bad!

用c分文件形式编写的一个管理系统，有创建商品信息，浏览，购物单，排序，密码管理等功能-A management system written in the form of c sub-file, create product information, browsing, shopping list, sorting, and password management