|Noun||1.||ABC - the elementary stages of any subject (usually plural); "he mastered only the rudiments of geometry"|
|1.||(computer)||ABC - Atanasoff-Berry Computer.|
|2.||(language)||ABC - An imperative language and programming
environment from CWI, Netherlands. It is interactive,
structured, high-level, and easy to learn and use. It is a
general-purpose language which you might use instead of
BASIC, Pascal or AWK. It is not a systems-programming
language but is good for teaching or prototyping.|
ABC has only five data types that can easily be combined; strong typing, yet without declarations; data limited only by memory; refinements to support top-down programming; nesting by indentation. Programs are typically around a quarter the size of the equivalent Pascal or C program, and more readable.
ABC includes a programming environment with syntax-directed editing, suggestions, persistent variables and multiple workspaces and infinite precision arithmetic.
An example function words to collect the set of all words in a document:
HOW TO RETURN words document: PUT IN collection FOR line in document: FOR word IN split line: IF word not.in collection: INSERT word IN collection RETURN collection
Interpreter/compiler, version 1.04.01, by Leo Geurts, Lambert Meertens, Steven Pemberton
FTP eu.net, FTP nluug.nl, FTP uunet.
["The ABC Programmer's Handbook" by Leo Geurts, Lambert Meertens and Steven Pemberton, published by Prentice-Hall (ISBN 0-13-000027-2)].
["An Alternative Simple Language and Environment for PCs" by Steven Pemberton, IEEE Software, Vol. 4, No. 1, January 1987, pp. 56-64.]