Prolog Sample Programs

BIRDS    - A sample expert system for identifying birds.  The ideas
           in this system can be used for any identification type
           expert system, including identifying problems based
           on symptoms.

CATCH    - A sample that illustrates the use of catch/3 and throw/1
           for implementing code that processes error exceptions.

CUSTORD  - A small sample customer-order-entry system written entirely
           in Prolog.  It shows how Prolog can be used for both the
           database as well as the transaction processing parts of
           a business application and encode rules for valid orders
           and inventory management.

DCGXPAND - Source code for the DCG -> Prolog translator.  This is the
           predicate that converts DCG syntax into the equivalent
           Prolog, inserting difference lists as appropriate.  A compiled
           version of this code is included in the base system.

DOSPATH  - A DCG program that reads DOS path names, verifies that
           they are correct, and splits them into directory and path.

GENE     - A collection of rules for family relationships, as well
           as rules for saving family data checking semantic integrity
           of updates.  See ENGLAND.FAM as a sample data file for
           a specific family.

MLIST    - A sample DCG program that parses address labels into
           fields that can be entered in a database.  For example,
           the label line 'STOW MA 01775' is parsed into city,
           state, and zipcode fields.  See source code for documentation.

MONEY    - A program that solves word arithmentic problems, such
           as the famous S E N D + M O R E = M O N E Y.

NANISRCH - The sample adventure game used with the Active Prolog
           Tutor.

SHIP     - A sample program for presenting various shipping options
           for a package or letter.  The various options and costs
           are computed with a combination of rules, tables and
           formulas.

TAXES    - A sample program for filling out tax forms, plus an article,
           originally published in PCAI, describing how the program
           works.

TRAFFIC1 - A very simple application illustrating how to implement a
           custom rule language and inference engine for it.  The example
           uses a goal-driven engine.

TRAFFIC2 - The same rules as in TRAFFIC1.PRO, and another simple
           inference engine, but this time a data-driven one.

TXTPAINT - Sample of how to use the DOS mouse predicates.  The sample
           is TXTPAINT.PRO, a text mode program that allows you
           to paint the screen various colors with the mouse.  To run
           it, type CPI TXTPAINT.

WARPLAN  - David Warren's classic planning program, with a number of
           sample problems.