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From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.lang.c
Subject: Re: swap(x,y)
Message-ID: <3040@solo5.cs.vu.nl>
Date: 23 Aug 89 08:34:02 GMT
References: <MYwDEFy00WB842JEUx@andrew.cmu.edu> <8350@boring.cwi.nl> <8514@galbp.LBP.HARRIS.COM>
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 16

jsb@advdev.LBP.HARRIS.COM (FLEA) writes:
\In article <8350@boring.cwi.nl> tromp@piring.cwi.nl (John Tromp) writes:
\:		 (Timothy R. Gottschalk) writes:
\...
\:>       x += y;
\:>       y = x - y;
\:>       x -= y;
\...
\:x^=y^=x^=y;
\...
\Sorry, folks, both of these are illegal if x and y are pointers.

Or if they're structs! :-)
-- 
"rot H - dD/dt = J, div D = rho, div B = 0, |Maarten Litmaath @ VU Amsterdam:
  rot E + dB/dt = 0" and there was light.   |maart@cs.vu.nl, mcvax!botter!maart