On Fri, Jul 10, 2009 at 6:28 AM, mohit_dreamer<[email protected]> wrote:
> #include<stdio.h>
> #include<conio.h>
> #define PRODUCT(x) (x*x)
> void main()
> {
> int i=3,j,k,l;
> clrscr();
> j=PRODUCT(i+1);
Expands to:
j = (i+1*i+1);
Which is equivalent to
j = (i+(1*i)+1);
> printf("%d",j);
> k=PRODUCT(i++);
Expands to:
k = (i++*i++);
Which is undefined behaviour. See http://c-faq.com/expr/evalorder2.html
> printf("\n%d",k);
> l=PRODUCT(++i);
Same effects as k - undefined behaviour.
> printf("\n%d",l);
> getch();
> }
> output:
> 7
> 9
> 49
> can u plz expln the output...??
>
> any help will be thankful.
>
> thanx.
--
PJH
http://shabbleland.myminicity.com/com
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