Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!umd5!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.lang.c
Subject: Re: Possible C Anomaly
Message-ID: <8554@mimsy.UUCP>
Date: Sat, 12-Sep-87 22:32:44 EDT
Article-I.D.: mimsy.8554
Posted: Sat Sep 12 22:32:44 1987
Date-Received: Sun, 13-Sep-87 10:48:52 EDT
References: <9236@brl-adm.ARPA>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 25

In article <9236@brl-adm.ARPA> gamma@EDN-UNIX.arpa (W. J. Showalter) writes:
>	k = (k > 1) ? k-- : 1;
>... According to K&R, the above expression is equivalent to
>	if (k > 1)
>		k = k--;
>	else
>		k = 1;
>... The problem is is that the two examples behave differently.

This is a case of `you are not supposed to do that!'.  The two
expressions are equivalent, and the second form is not defined:

	k = k--;

like

	a[i] = i--;

is simply not defined in C.  Since the second form is not defined,
neither is the first.

A really good compiler would complain.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris