magazine subscriptions

listall : print out the entire mailing list sorted alphabetically by name formatted as follows:
Draven, Eric                  10-2003
Loft, Bleak Apartments
BadPartofTown, SomeState
U.S.A., Earth

renew : given a month and year (of the form mm-yyyy), print out a sorted list of all subscribers who must renew in the given month.

The original data is in a text file called subscribers and each 'record' has the following format:
- you may assume input is valid
- there is one field per line
- there will be one blank line between records
- "blank" fields are entered as '-'

Last Name
First Name
Middle Name
Title
   Street Address
   City
   Province
   Country
   Planet
   Renewal Date: in the form: MM-YYYY

Eg.

Draven
Eric
-
-
   Loft
   Bleak Apartments
   BadPartofTown
   SomeState
   U.S.A.
   Earth
  10-2003

Each record will follow the next with exactly one blank line in between.

A working version of this assignment is available in the course directory for you to try so you can see how it works.

Minimal requirements for this program:
To meet the minimal requirements your program must be able to read a single (possibly long) list of names and addresses from a specified file, and then be able to process the following interactive requests:
1. listall : print out the entire mailing list sorted alphabetically by name
2. renew 10-2002 : given a month and year (of the form mm-yyyy), print out a sorted list of all subscribers who must renew in the given month.

Once a mailing list has been created it is to be written to a file (whose name is given by the user) so that the next time the program is run it can use this file as it's input file.

Notes on Marking:
In order to pass it must work. (Some marks will be given to all *reasonable* attempts, working or not)

For a Maximum Grade of C+:

adequate, clean design;

adequate documentation

user interface reasonable?

adequate testing?

uses procedures; array of records
sorts properly
reads from predetermined file (name NOT specified by the user)
displays list of subscribers on the screen
displays list of subsccribers due to renew in a given month/year on the screen

For a Maximum Grade of B+:

All of the Above, PLUS:
good, clean design;

good documentation

user gets to choose the names of the input and output files
allow subscriptions to be 'renewed': i.e. change the renewal dates for spcified subscribers

For a Maximum Grade of A:

All of the Above, PLUS:
excellent design;

excellent documentation

allows for a default output file name that is built from the input file name (i.e. add or change the suffix to '.out')

display lists one screenful at a time
allow for full (all data in each record) or partial (name and renewal only) data to be displayed

Bonuses (caution: some of these bonuses are quite involved):
1. Include one or more of the following added features:
a   : add a subscriber to list;

r   : remove subscriber from list;

x  : purge (remove all expired subscribers);

l  : print labels (format output so it will fit on pre-fab label sheet)

n  : start new list

c  : change the address of an existing subscriber

2. Set up the user interface menu-style allowing the user to choose one of several 'command' options' (like those listed above)

3. Allow the user to enter new subscribers from the terminal as well as from a file.

4. Implement the list as a proper linked list.

The program must be fully documented and follow appropriate style constraints. You must provide sufficient evidence that the program compiles and executes correctly.