Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!munnari.oz.au!metro!cluster!necisa!boyd
From: boyd@necisa.ho.necisa.oz (Boyd Roberts)
Newsgroups: comp.lang.c
Subject: Re: Brain Teaser
Message-ID: <1259@necisa.ho.necisa.oz>
Date: 30 Mar 90 00:59:43 GMT
References: <10289@wpi.wpi.edu> <578@atcmpe.atcmp.nl>
Organization: NEC Information Systems Australia Pty. Ltd.
Lines: 13

From article <10289@wpi.wpi.edu>, by oesterle@wpi.wpi.edu (Shawn H. Oesterle):
> Problem:
> 	Swap two pointers without using a third pointer.
>

Arithmetic operations with pointers that don't point to `the same array'
are not defined.  Apart from that, this `Brain Teaser' is a pointless
discourse into abstruse and non-portable constructs.


Boyd Roberts			boyd@necisa.ho.necisa.oz.au

``When the going gets wierd, the weird turn pro...''