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ABC




1. Atanasoff-Berry Computer.

2. 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 . ABC has been ported to Unix, MS-DOS, Atari, Macintosh.

Home (http://www.cwi.nl/cwi/projects/abc.html).

FTP eu.net (ftp://ftp.eu.net/programming/languages/abc), FTP nluug.nl (ftp://ftp.nluug.nl/programming/languages/abc), FTP uunet (ftp://ftp.uu.net/languages/abc).

Mailing list: .

E-mail: .

["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.]

(1995-02-09)

2. Argument, Basic value, C?.

An abstract machine for implementation of functional languages and its intermediate code.

[P. Koopman, "Functional Programs as Executable Specifications", 1990].



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ABC ALGOL
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ABCL/R2


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