说明：  数据结构程序设计，实现以下问题：某银行营业厅共有6个营业窗口，设有排队系统广播叫号，该银行的业务分为公积金、银行卡、理财卡等三种。公积金业务指定1号窗口，银行卡业务指定2、3、4号窗口，理财卡业务指定5、6号窗口。但如果5、6号窗口全忙，而2、3、4号窗口有空闲时，理财卡业务也可以在空闲的2、3、4号窗口之一办理。 客户领号、业务完成可以作为输入信息，要求可以随时显示6个营业窗口的状态。
(Data structure program design, to achieve the following questions: a total of six banking hall business window with queuing system broadcasts called the number, the bank' s business is divided into funds, bank cards, financial cards, three. Specify the 1st window provident fund business, the bank card business specified window 2,3,4, 5,6 wealth card business specified window. However, if the windows are all busy 5,6 and 2,3,4 windows free time, financial cards can also be one of the windows 2,3,4 idle processing. Customer collar number, can be used as input to complete business information requirements can be displayed at any time six operating state of the window.)