分析、设计和实现一个能够满足以下功能的模拟银行叫号系统:

1.　　某家银行营业厅，营业窗口设2~3个。

2.　　每位客户进入营业厅后，在取号机上申请一个服务号码。

3.　　服务号码只考虑一种用户类别。号码范围：000~999。

4.　　营业窗口按服务号码的顺序，叫号为客户办理。营业窗口叫号后，进入办理状态。

5.　　营业窗口在办完一项业务后，可以暂停办理，停止叫号，休息一段时间，然后恢复办理。但原则上所有窗口不会同时休息。

6.　　当所有服务号码都被处理完毕，才允许发出“下班” 指令，关闭营业厅，退出程序。

用键盘模拟输入,满足客户取号，营业窗口叫号，多个客户的排队的最低要求与可在屏幕上显示相关信息的进一步要求。

-Analysis, design and implementation of a simulation of the following functions to meet the bank calling system: (1) a bank operating room, business window set 2-3. 2 each customer after entering the operating room, request a service number on the check number machine. 3 Service numbers only consider a user category. Number range: 000 to 999. 4 business window service order number, called the number of customers for. Opening the window after the call, enter handled state. 5 business window after finishing a business, you can CLOSURE, stop the call, take a break and then resume processing. However, in principle, all the windows are not simultaneously rest. 6 When all service numbers have been processed before allowing issued a " work"　directive to close the operating room, exit the program. The analog input with the keyboard, to meet customer check number, business window called the number, more than the minimum requirements of customers queuing and can be displayed on the scree