unexpected result

[ashu]

hi
look at this code

include <stdio.h>
int main(void)
{
int i,j=2;
i=j++ * ++j * j++;
printf("%d %d",i,j);
return 0;
}

acc. to me the values of i & j are 27,5 respectively & rightly so as i
ran this on turbo c++ compiler but if i ran this on lcc-win32 compiler
i got 32 & 5 for i & j respectively.
why this is so

[Ankur]

hi anshu
it all compiler depenedent
in lcc-win32 compiler
first the code run on right to left
means i=4*4*2
it give 32 for i
but in turboc compiler it execute code left to right and take big value
among it i.e. 3
so thats y its give 27.
bye
Ankur

ashu wrote:

hi
look at this code

include <stdio.h>
int main(void)
{
int i,j=2;
i=j++ * ++j * j++;
printf("%d %d",i,j);
return 0;
}

acc. to me the values of i & j are 27,5 respectively & rightly so as i
ran this on turbo c++ compiler but if i ran this on lcc-win32 compiler
i got 32 & 5 for i & j respectively.
why this is so

[Chris Dollin]

ashu wrote:

hi
look at this code

include <stdio.h>
int main(void)
{
int i,j=2;
i=j++ * ++j * j++;

Undefined behaviour: see the FAQ.

(Informally speaking, you update j three times in random order;
why do you expect the result to make sense? Except it's worse
than that.)

--
Chris "sparqling" Dollin
"Who do you serve, and who do you trust?"

[novice]

Hi geeks,
Please tell me which book gives the complete
detail of dynamic memory management in C and C++.

[Grumble]

ashu wrote:

hi
look at this code

include <stdio.h>
int main(void)
{
int i,j=2;
i=j++ * ++j * j++;
printf("%d %d",i,j);
return 0;
}

acc. to me the values of i & j are 27,5 respectively & rightly so as
i ran this on turbo c++ compiler but if i ran this on lcc-win32
compiler i got 32 & 5 for i & j respectively. why this is so

This is a frequently asked question.

Please read http://c-faq.com/expr/

[Keith Thompson]

"ashu" <ri*********@ya hoo.com> writes:

include <stdio.h>
Copy-and-paste carefully; you missed the '#'.
int main(void)
{
int i,j=2;
i=j++ * ++j * j++;
printf("%d %d",i,j);
return 0;
}

Undefined behavior. Read section 3 of the comp.lang.c FAQ,
<http://www.c-faq.com/>.

--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.

[Joe Estock]

novice wrote:

Hi geeks,
Please tell me which book gives the complete
detail of dynamic memory management in C and C++.

This has nothing to do with OP's question and should have been posted as
a new thread; not a reply to an existing one.

Google is a great place to find the information you are looking for
since I'm not sure what you mean by "dynamic memory management in c". As
far as C++ goes, you want comp.lang.c++ which is down the all first door
on the right. If you have a question which is specific to *c* then by
all means ask here (by posting in a new thread of course) and I'm sure
someone here would be happy to help you.

Joe

[srikanth]

i dont my version of compiler but the result on my system was 27 &5
respectively

[Default User]

srikanth wrote:

i dont my version of compiler but the result on my system was 27 &5
respectively

Result of what? See below.

Brian

--
Please quote enough of the previous message for context. To do so from
Google, click "show options" and use the Reply shown in the expanded
header.

[John Tsiombikas (Nuclear / Mindlapse)]

On 2006-03-08, srikanth <ad********@gma il.com> wrote:

i dont my version of compiler but the result on my system was 27 &5
respectively

Please include context, by properly quoting the relevant parts of the
post you are replying to, so that people will understand what you are
talking about.

--
John Tsiombikas (Nuclear / Mindlapse)
nu*****@siggrap h.org
http://nuclear.demoscene.gr/