macros i thnik cant swap pointers..i have doubt for same it is test ur c
skil question
On Sun, Oct 9, 2011 at 10:08 PM, sunny agrawal <sunny816.i...@gmail.com>wrote:
> because you have not made any call to swap values of x and y
>
> I Don't know what you are trying to do here
> if you want to swap values why are you not calling macro swap(x,y,int)
> you are making a macro call to swap pointers and you can check that pointer
> will get swapped.
>
>
> On Sun, Oct 9, 2011 at 9:20 PM, Rajesh Kumar <testalgori...@gmail.com>wrote:
>
>>
>>
>> ---------- Forwarded message ----------
>> From: Rajesh Kumar <testalgori...@gmail.com>
>> Date: Sun, Oct 9, 2011 at 2:58 PM
>> Subject: why we can not swap values using macro?
>> To: algogeeks@googlegroups.com
>>
>>
>> why this code doesn't swap values of x and y?
>>
>> #include<stdio.h>
>> #define swap(a,b,c) c t;t=a,a=b,b=t;
>> main()
>> {
>> float x=10,y=20;
>> float *p,*q;
>> p=&x,q=&y;
>> swap(p,q,float *);
>> printf("%d %d\n",x,y);
>> }
>>
>>
>> --
>> Regards
>> Rajesh Kumar
>>
>>
>>
>>
>>
>> --
>> Regards
>> Rajesh Kumar
>>
>>
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>
>
>
> --
> Sunny Aggrawal
> B.Tech. V year,CSI
> Indian Institute Of Technology,Roorkee
>
>
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