Lets see what happen with ur code...
original
# define swap(a,b) temp=a; a=b; b=temp;
main( )
{
int i, j, temp;
i=5;
j=10;
temp=0;
if( i > j)
swap( i, j );
printf( “%d %d %d”, i, j, temp);
}
after expansion of macro
# define swap(a,b) temp=a; a=b; b=temp;
main( )
{
int i, j, temp;
i=5;
j=10;
temp=0;
if( i > j)
*temp=a; //only this line comes under if condition*
a=b;
b=temp;
printf( “%d %d %d”, i, j, temp);
}
On Sat, Aug 6, 2011 at 10:26 AM, saurabh singh <[email protected]> wrote:
> Try compiling with gcc -E <filename.c>.That will clear everything....
>
>
> On Sat, Aug 6, 2011 at 10:25 AM, saurabh singh <[email protected]>wrote:
>
>> hint:MACRo is just substituted as it is....
>>
>>
>> On Sat, Aug 6, 2011 at 10:23 AM, ranjane <[email protected]> wrote:
>>
>>> # define swap(a,b) temp=a; a=b; b=temp;
>>> main( )
>>> {
>>> int i, j, temp;
>>> i=5;
>>> j=10;
>>> temp=0;
>>> if( i > j)
>>> swap( i, j );
>>> printf( “%d %d %d”, i, j, temp);
>>> }
>>>
>>>
>>> On compiling i got ans 10, 0, 0.explain..
>>>
>>> --
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>>>
>>
>>
>> --
>> Saurabh Singh
>> B.Tech (Computer Science)
>> MNNIT ALLAHABAD
>>
>>
>>
>
>
> --
> Saurabh Singh
> B.Tech (Computer Science)
> MNNIT ALLAHABAD
>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Algorithm Geeks" group.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to
> [email protected].
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--
**Regards
SAGAR PAREEK
COMPUTER SCIENCE AND ENGINEERING
NIT ALLAHABAD
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