这是一个用C写的购物系统小程序，主要功能有1登陆系统，2修改管理员密码，3退出；登陆的账号密码为manager，0000；进入系统后有3个主要的功能，1客户信息管理，2购物结算，3真情回馈；这3个主要功能下面还有几个小功能。这个源程序可以帮助刚学习C语言的人更好的学习函数，数组，结构体，宏等技术。-This is a written with C shopping system of small procedures, the main function has 1 landing system, modify administrator password exit 2, 3　landing account number password manager, 0000　after entering the system has 3 main functions, 1 customer information management, 2 shopping settlement, 3 of the 3 major real feedback　here are a few small function function. This source can help just learning C language better learning function, array, structure, macro technology.