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From: ndiamond@watdaisy.UUCP (Norman Diamond)
Newsgroups: net.lang.c
Subject: Re: Set type
Message-ID: <6990@watdaisy.UUCP>
Date: Wed, 20-Feb-85 16:50:42 EST
Article-I.D.: watdaisy.6990
Posted: Wed Feb 20 16:50:42 1985
Date-Received: Mon, 25-Feb-85 15:16:28 EST
References: <10983@watmath.UUCP> <21000020@uiucuxc.UUCP>
Organization: U of Waterloo, Ontario
Lines: 24

> Creating sets in C is easy.  To declare set element, use #define:
> 
> 	#define RED 01
> 	#define BLUE 02
> 	#define GREEN 04
> 
> C has a union operator ("|"), an intersection operator ("&"), and even
> a set difference operator ("&~").  Of course, this approach limits you
> to sets which contain no more elements than are contained in an integer,
> but this limitation also tends to apply to PASCAL sets.
> 				Kenneth Almquist

That limitation does not apply to most PASCAL sets.  The vast majority of
PASCAL compilers allow sets large enough to support SET OF CHAR, but their
integers are not >= 127 bits in size.
-- 

   Norman Diamond

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