@prasad jondhale: +1
Thanx.
Wasif Hossain
Final Semester Student,
Computer Science and Engineering(CSE),
Bangladesh University of Engineering and Technology(BUET)
Dhaka, Bangladesh.
On Wed, Oct 12, 2011 at 3:47 AM, prasad jondhale
<jondhale.pra...@gmail.com>wrote:
> hey man u have made a very silly mistake....you have swaped only pointers
> not values.....
> #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("%f %f\n",*p,*q);
> }
>
> gives result 20.000000 10.000000
> if want to change values of x and y then do
> *#define swap(a,b,c) c t;*t=*a,*a=*b,*b=*t;*
> *
> *
> *you can check your preprocessed output in linux by using -E option*
> *example:gcc -E pgm.c*
>
> On Mon, Oct 10, 2011 at 10:19 PM, sravanreddy001 <sravanreddy...@gmail.com
> > wrote:
>
>> The swap is happenning between the p & q pointers,
>>
>> https://ideone.com/4MdX4
>>
>> p points to y, q points to x after swap.
>>
>>
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>
>
>
> --
>
> Thanks & Regards
> Prasad Y.Jondhale
> M.Tech(software engg.),
> Delhi College Of Engineering,
> Main Bawana road,Delhi-110042
> Ph-09540208001
>
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