&& and || Operator precedence enforcement

[Vivek N]

Hi Folks,
This question may well have been asked and answered before. But, sorry
that I couldn't find one from the archives.

I typed up this program and compiled it with gcc 3.3.2
main() {
int i = -3,j= 2,k=0,m;

m = ++i || ++j && ++k;
printf("\n%d %d %d %d\n",i,j,k,m);
}
and got the output to be
-2 2 0 1

I presumed that the answer should have well been
-3 3 1 1

as ++j and ++k would first be evaluated and && operator applied to
obtain the result to be TRUE (3 && 1). Hence, ++i wouldn't be evaluated
as one part of || goes TRUE.

The ANSI C specification clearly states that && has precedence over ||.

Could someone explain why this strange "-2 2 0 1" output for the program
is obtained?

Cheers
Vivek

[Dan Pop]

In <40************ ***********@new s.free.fr> Nudge <de*****@kma.eu .org> writes:

Dan Pop wrote:

Grumble wrote:

I think your clock is incorrectly set.

The original message is dated 14:34:18 GMT (1) and your reply is dated
13:56:05 GMT (2).

(1) Date: 19 Jan 2004 06:34:18 -0800
(2) Date: Mon, 19 Jan 2004 13:56:05 GMT

How did you decide that the original message was correctly time stamped?

The original message showed up on my system when I downloaded new
messages at approximately 14:40:00 GMT.

Then Pete's and Christopher's messages showed up on my system when I
downloaded new messages at approximately 14:55:00 GMT.

When Richard's message showed up 5 minutes later, I figured it was
more probable that the first 3 were correctly time-stamped, and it
was Richard's clock which was incorrectly set.

Are you satisfied with my answer? :-)

Looks like a perfect non-sequitur to me. There is no connection between
the order Usenet messages arrive at one site and the order in which they
were posted. So, it is perfectly possible that the original message was
incorrectly time stamped and that Richard was the first person to post a
reply to it, even if you got other replies before his. No need to assume
that the other messages were incorrectly time stamped in order to validate
this scenario.

Dan
--
Dan Pop
DESY Zeuthen, RZ group
Email: Da*****@ifh.de