Path: utzoo!attcan!uunet!zephyr.ens.tek.com!uw-beaver!mit-eddie!wuarchive!zaphod.mps.ohio-state.edu!rpi!uupsi!fozzie!stanley
From: stanley@fozzie.UUCP (John Stanley)
Newsgroups: comp.lang.c
Subject: Re: Is there a good example of how toupper() works?
Message-ID: <m56aR1w161w@fozzie.UUCP>
Date: 19 Oct 90 21:41:57 GMT
References: <859@agcsun.UUCP>
Organization: One Man Brand
Lines: 17


jackm@agcsun.UUCP (Jack Morrison) writes:
> 
> (or for anal types, :-)
> 	while (*duh != '\0') {
> 
   Or, for even less possibility for screw-ups:

	while ( '\0' != *duh ) {

The reason for the order becomes clearer in equality testing, when the
compiler will complain about ( '\0' = *duh ) and not ( *duh = 0 ). It is
real easy to catch a == vs. = problem this way.



This is my signature. It doesn't contain my name at all!