Practical C Programming, 3rd Edition

Exercise 12-1: Design a data structure to handle the data for a mailing list.

Exercise 12-2: Design a structure to store time and date. Write a function to find the difference between two times in minutes.

Exercise 12-3: Design an airline reservation data structure that contains the following data:

Flight number

Originating airport code (3 characters )

Destination airport code (3 characters)

Departure time

Arrival time

Write a program that lists all planes leaving from two airports specified by the user .