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Algol 68 is a procedural language designed under the auspices of IFIP Working Group 2.1 as a successor to Algol 60. The language is formally defined in the Revised Report on the Algorithmic Language Algol 68 by A. van Wijngaarden et al using a VW (2 level) grammar. It is designed to be as orthogonal as possible and is block structured via the constructs: if - then - else - fi, case - in - out - esac, from - by - from - to - while - do. It is strongly typed with user definable modes and automatic de-referencing and coercion. Memory management is automatic, via garbage collection. Transput (I/O) is defined in the language and includes comprehensive formatting abilities. It did not gain widespread popularity, possibly due to the price/availability of compilers, or its perceived complexity. In some ways it was ahead of its time and some features have influenced subsequent languages such as C++.
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99 Bottles of Beer on the Wall - Algol 68 version. Charles Lindsey's Home Page - Algol 68S compilers for Sun3, Sun Sparc, Atari ST and Acorn Archimedes. A History of ALGOL 68 - By C.H. Lindsey; ACM Digital Library, 1993, ISSN 0362-1340. Abstract of article from the Second ACM SIGPLAN Conference on History of Programming Languages, 1993. Full text for ACM members only. Algol 68 Genie - Algol68G is a well featured Algol 68 implementation (interpreter) for Linux, BSD, and MacOS. Author: Marcel van der Veer. [Open source, GPL] An Introduction To Algol 68 - The second ACM SIGPLAN conference on History of programming languages. Algol 68 to C - Portable translator to allow compiling Algol 68 code, and some example Algol 68 programs in the same directory. Computer Engineering by Gordon Bell et al. - A brief description of ALGOL 68 System implemented on Cm*. Marc's Programming Projects - Unfinished project to write Algol 68 compiler; source code provided in CWEBx. Historic Documents in Computer Science - Has scans of many Algol 68 documents including the RRE Algol 68R 'Green Book.' VanWijngaarden MR76.pdf - A. vanWijngaarden's MR76 paper on the orthogonal design of a language from 1965, which was the starting point of Algol 68. Algol68 - A synopsis of the features of Algol 68. The Algol Bulletin - The historical IFIP WG2.1 series of Algol Bulletins. [Required ACM Web account] László Csirmaz - There is an Algol 68 interpreter for DOS and Linux here. ALGOL 68 - Growing article, with links to many related topics. [Wikipedia] Index of /pub/dick/Algol68 - Dick Grune's Algol 68 directory with test sets, transput, and a Snobol interpreter. IFIP Working Group 2.1 - The WG that developed the Algol languages. The Use of ALGOL 68 for Trees - By H.D. Baecker; The Computer Journal, Volume 13, Issue 1, pp. 25-27. Abstract and text in PDF format. A comparison of PASCAL and ALGOL 68 - Abstract and text in TIFF form from The Computer Journal, Volume 21, Issue 4, pp. 316-323. Practical experience with ALGOL 68-RT - Abstract and text in PDF form from The Computer Journal, Volume 22, Issue 2, pp. 114-118. Programming denotational semantics II - using Algol 68. Abstract and text in PDF form from The Computer Journal, Volume 28, Issue 5, pp. 480-486. An Experimental Testbed for Numerical Software, part 2: ALGOL 68 - By M.A. Hennell, D, Hedley; The Computer Journal, Volume 22, Issue 1, pp. 53-56. Abstract and text in PDF format.
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