C Language flight booking system

5、 Booking system ( Two people 1 Group )
requirement ： Complete the management of flight information , And save the data to a file .
The main function ：
① entry ： You can enter the flight information （ Data can be stored in a data file , data structure 、 The specific data is determined by yourself ）;
② Inquire about ： You can query the situation of a certain route （ Such as , Input flight number , Query takeoff and landing time , Take off and arrive in the city , Flight fare , Fare discount , Determine whether the flight is full ）; You can enter the take-off and arrival city , Check the flight status of the aircraft ;
③ booking ：（ Booking information can be stored in a data file , The structure is set by itself ） You can book tickets , If the flight has no tickets , Relevant optional flights can be provided ;
④ To refund a ticket ： Refundable ticket , Modify relevant data files after ticket refund ; The customer information has a name , Id no. , Number of tickets booked and flights , The order must have a number ;
⑤ Modify flight information ： When the flight information changes, the flight data file can be modified .

Source download

link ：https://pan.baidu.com/s/1JJs9vbZahUCB6cQvXLgAVg?pwd=1111
Extraction code ：1111