Assignment 2 - Cat Club

A cat has:
   a name (string)
   a colour/description (string)
   a date of birth (int)
   a price (int)

A person has:
   a name (string)
   an phone number (string)
   a membership number (int)
   some number, possibly zero, of cats (linked list)

A cat club consists of
   some number of persons (linked list)

None of the strings mentioned above ever have spaces in them.
All people and all cats always have different names.

The complete membership of a cat club is kept in a file with this format:
   each person is listed with three items (name, phone, membership) on a single line,
   after each person their cats are listed, one per line, four items each
   after each list of cats there is a single * on a line.
Example:

Janet-Jones 111-222-3333 76567
Tibby striped 20071020 7599
Pinky grey 20040930 9599
*
Jimbo-Smith 111-234-5544 54540
Goldie orange 20130521 6999
*
Mindy-Mattheson 111-222-8474 23152
*
Mortimer-Prosinski 111-234-6432 93811
Dennis black 20090808 7999
Moby white 20090808 4995
Puddn striped 20100425 4995
*

Write a program that reads in such a file and constructs the cat club structure as
a linked list of linked lists. The program should then accept commands from the user.

The commands should be:

1. Accept a person's name, find them and print all their cats' information

2. Accept a cat's name, find it, print its owner's and its own information

3. Find and print the most expensive cat in the club

4. Print everything - each owner, followed by all their cats

5. Accept a cat's name and a new owner's name. Take the cat from its original
   owner and give it to the new one.

6. Exit