This is very much like assignment 4, but based on a binary tree.

The file /home/218/database.txt contains 10,000 lines of data. Each line describes
one person: Social security number, birth date (YYYYMMDD), first name, last name,
and zip code.

Here are six unexciting lines from the middle of the file:

    525373469 19630128 Nancy Frankenstein 88539
    525388530 19630228 Darcy Epstein 56906
    525397776 19710519 Frances Cadwallader 88625
    525535897 19361217 Edwin Frogmorton 07004
    525753047 19380123 Alexander Jones 24267
    525780779 19420616 Tom Wilson 39264

You are to write a program that reads this file or any other file with the same
layout, and stores its information in a Binary Tree. The tree should be ordered 
on the person's name - primarily last name, but when two people have the same 
last name, order them by first name.

Make your program accept the name of the database file from the command line
instead of always using /home/218/database.txt, so you might run you program
by typing
          a.out /home/218/database.txt

Once your program has constructed the tree, it should enter an interactive loop,
taking commands from the user:

FIND firstname lastname
   - display all information about the named person,
     your program must not crash if no such person exists!

PRINT
   - display all information about everyone in the database.

ZIP zipcode
   - display the names of all people living in the given zip code.

OLDEST
   - print the name and zipcode of the oldest person in the database.

SAVE filename
   - save the entire database in the named file. Make sure the format is correct,
     you should be able to run your program again, this time giving it the new
     file name, and it being able to read it correctly. This will of course
     result in the database becoming sorted. If you later run the program again
     and make it re-read the file just created, you will get a very badly
     structured binary tree, and some operations may take longer than expected.

RELOCATE firstname lastname newzipcode
   - Change to zip code of the named person. Be sure your program survives
     if no such person exists.

EXIT
   - exit from the program.

Make sure your program's output is neat and tidy. No unnecessary prompts.