Report on the algorithmic language ALGOL 68
Report on the algorithmic language ALGOL 68
A graded bibliography on macro systems and extensible languages
ACM SIGPLAN Notices
ETC: an extendible macro-based compiler
AFIPS '71 (Spring) Proceedings of the May 18-20, 1971, spring joint computer conference
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Most programming languages have one or more features which may be considered as extensions of the language. The most common such feature is the procedure, as it exists in Algol 60 or in PL/I, or the subroutine in Fortran. By means of this device it is possible for the programmer to give a name to a portion of his algorithm and to invoke this portion one or more times simply by using that name. Algol 68 has, of course, such familiar features, but it has others which may not be so familiar. It is our intention to describe, by means of an example, some of the newer language extension features of Algol 68.