编辑一个时钟提醒工具，当运行该程序后， 显示当前系统时间，并且出现提醒时间设定， 输入要提醒的时间和提醒的事件，程序运行， 在到达设定时间时，程序会提醒！-edit a clock to remind tool when executing the procedure, the system shows the current time, there is also set to remind time, the importation would like to remind the time