要求设计一个管理系统，能完成如下功能：

（1）录入班次信息(信息用文件保存),可不定时地增加班次数据；

（2）浏览班次信息,可显示出所有班次当前状况(如果当前系统时间超过了某班次的发车时间,则显示"此班已发出"的提示信息)-To design a management system to complete the following functions: (1) Input frequency information (information used to save the file), may from time to time to time increase the frequency of data　(2) frequency of information, shows the current status of all trips (if the current system time more than a certain frequency of departure time, then displays " This ban has been issued a"　prompt information)