航空售票处的服务系统（7）

　　任务：通过此系统可以实现如下功能：

　　录入：可以录入航班情况（数据可以存储在一个数据文件中，数据结构、具体数据自定）

　　查询：可以查询某个航线的情况（如，输入航班号，查询起降时间，起飞抵达城市，航班票价，票价折扣，确定航班是否满仓）；

　　可以输入起飞抵达城市，查询飞机航班情况；

　　订票：（订票情况可以存在一个数据文件中，结构自己设定）

　　可以订票，如果该航班已经无票，可以提供相关可选择航班；

　　退票：可退票，退票后修改相关数据文件；

　　客户资料有姓名，证件号，订票数量及航班情况，订单要有编号。

　　修改航班信息：当航班信息改变可以修改航班数据文件。

　　要求：根据以上功能说明，设计航班信息，订票信息的存储结构，设计程序完成功能。-Air ticket service system

Task: The system can be achieved through the following functions:

Entry: You can input flight conditions (data can be stored in a data file, data structure, specific data from the set)

Enquiries: You can query a route (such as, enter the flight number, the query time taking off and landing, taking off from the city, flight fares, fare discounts, to determine whether the full-flight position)

You can enter to take off from the city, check flight conditions

Reservations: (booking conditions for the existence of a data file, structure, set their own)

Can book your tickets, if the flight has been without a ticket, you can choose to provide flight

Refund: Refund available, a refund after the revision of the related data files

Customer information with names, identification number, booking number and flight conditions, the order must be numbered.

Modify the flight information: When the flight information changes can modify the flight data files.

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