与admin注册的简单的咖啡馆系统和用户(学生)登录。 admin有全部纠正增加资金到学生和改变密码。 学生有权利改变他们自己的密码。-Registered with the admin cafe simple system and the users (students) registry. admin all the correct additional funds to students and to change the password. Students have the right to change their own password.