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From: whm@arizona.UUCP (Bill Mitchell)
Newsgroups: net.lang.c
Subject: Preprocessor Trickery
Message-ID: <12361@arizona.UUCP>
Date: Tue, 26-Jun-84 01:25:14 EDT
Article-I.D.: arizona.12361
Posted: Tue Jun 26 01:25:14 1984
Date-Received: Wed, 27-Jun-84 03:46:21 EDT
Organization: Dept of CS, U of Arizona, Tucson
Lines: 19

I need a way to form variable names using cpp macros.  For example, I'd
like a macro X(y), which might expand X(foo) into Xfoo.  It so happens
that

	#define X(y) X/**/y
	X(foo)

works on 4.xbsd and on V7.  This apparently because cpp considers
	int z/**/z;
to be
	int zz;

Is there some proper way to achieve the same effect without relying on
this "feature" of cpp and thus retain some hope of portability?

					Thanks,
					Bill Mitchell
					whm.arizona@csnet-relay
					{noao,mcnc,utah-cs}!arizona!whm