RE: [LIP] Undefined behaviour ?

Hi,

|-----Original Message-----
|From: linux-india-programmers-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org 
|On Behalf Of Mithun Bhattacharya
|Subject: [LIP] Undefined behaviour ?
|
|
|-----------------
|#include <stdio.h>
|main() {
|int i = 4;
|/* int j = i+++++i+i+++++i; */
|/* int j = i++ + ++i + i++ + ++i ; */
|int j = (i++)+(++i)+(i++)+(++i);
|printf("%d\n", j);
|}
|-----------------
|
<snip>
|
|Obviously none of them match what gcc is coming up with. Could someone
|please explain what is happening here ?
|
From my limited knowledge, I know that all this is purely compiler
dependent. You run this code on other machines like SUN, HP also, and
you would get different results. I don't think there is a compiler
'standard' which tells how to evaluate and optimize such expressions. 
So, IMHO this kind of coding should be avoided for (atleast) commercial
products.

Regards
Sirish



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