采用链式存储结构实现以下任务。

1． 航空客运订票的业务活动包括：查询航线、客票预定和办理退票等。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。要求：

（1）每条航线所涉及的信息有：终点站名terminus、航班号flight_numbe、飞机号plane_number、飞行日期year, month, day、乘员定额ration、余票量remaining、已订票的客户名单roll（包括姓名name、订票量ticket_capacity）、已订票的客户数roll_num。

（2）通过此系统可以实现如下功能。

① 输入功能 ② 输出功能 ③添加航班功能

④ 删除航班功能 ⑤ 查询功能 ⑥订票功能

⑦ 退票功能 -Chain storage structure used to achieve the following tasks.

1. Air passenger booking business activities include: Query routes, such as ticket booking and obtain refunds. Try to design a passenger booking system, so that the business can make use of the computer to complete. Requirements:

(1) the information involved in each route are: terminal name terminus, flight number flight_numbe, aircraft number plane_number, the flight date of year, month, day, the crew fixed ration, I vote the amount of remaining, has been booking client list roll ( including their names name, booking the amount of ticket_capacity), the number of clients have been booking roll_num.

(2) this system can be achieved through the following functions.

① ② input output capability to add flight capabilities ③

④ ⑤ inquiry function delete function ⑥ Flight booking functionality

⑦ refund feature