Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!dptspd!rlf
From: rlf@dptspd.sat.datapoint.com (Rory Foster)
Newsgroups: comp.lang.c
Subject: Re: Just a little something that has been bothering me.
Message-ID: <rlf.661536169@dptspd>
Date: 18 Dec 90 16:02:49 GMT
References: <2753F21B.2F6@tct.uucp> <1990Nov30.180913.20890@clear.com> <kbMJrQO00VpNEgwmsE@andrew.cmu.edu> <1990Dec08.222943.1581@cs.widener.edu>
Organization: Datapoint Corporation, San Antonio, TX
Lines: 27

sven@cs.widener.edu (Sven Heinicke) writes:

>What is quicker?

>	int a = 0,i = 0;

>or

>	int a,i;
>	i = a = 0;

>and why?

>This type of thing has been bothering me for a long time.


Well, I looked at it and (without optimizing) the first case was "quicker".
I was using the UNIX SVR4 C compiler.  If your compiler has an assembly option,
(-S in Johnson's PCC) use it to see for yourself.

When I optimize, my compiler shows no difference.  So there you have it,
it sort of just depends on what you're using at the time.

Regards,

Rory Foster
rlf@dptspd.sat.datapoint.com