1 问题描述　　

航空客运订票的业务活动包括：查询航线、客票预订和办理退票等。试设计一个航空客运订票系统，以使上述业务可以借助计算机来完成。

1.1 每条航线所涉及的信息有：终点站名、航班号、飞机号、飞行周日(星期几)、乘员定额、余票量、已订票的客户名单(包括姓名、订票量、舱位等级1，2或3)以及等候替补的客户名单(包括姓名、所需票量)

1.2 作为示意系统，全部数据可以只放在内存中

1.3 系统能实现的操作和功能如下：

1.3.1 查询航线：根据旅客提出的终点站名输出下列信息：航班号、飞机号、星期几飞行，最近一天航班的日期和余票额

1.3.2 承办订票业务：根据客户提出的要求(航班号、订票数额)查询该航班票额情况，若尚有余票，则为客户办理订票手续，输出座位号；若已满员或余票额少于订票额，则需重新询问客户要求。若需要，可登记排队候补

1.3.3 承办退票业务：根据客户提供的情况(日期、航班)，为客户办理退票手续，然后查询该航班是否有人排队候补，首先询问排在第一的客户，若所退票额能满足他的要求，则为他办理订票手续，否则依次询问其他排队候补的客户

-a descr iption of the problem of air passenger booking business activities include : Inquiry routes, ticket booking and processing such refund. Design of a test air passenger booking system, so that these operations can take advantage of the computer to complete. 1.1 per route involving information : terminal, and flights, aircraft, flight Sunday (week). Crew fixed, the amount of votes I have been booking list of the clients (including the names, booking volume, a class, 2 or 3) and the replacement waiting list of the clients (including the names, the required amount of votes) 1.2 as a hint system, All data can be only a memory system can achieve 1.3 on the operations and functions as follows : 1.3.1 inquiries route : According to the passenger terminal from the export of the following info