Re: [algogeeks] C Macro
Thats because you have swapped pointers and printing variables.
On Mon, Oct 29, 2012 at 11:22 PM, rahul sharma rahul23111...@gmail.comwrote:
I have taken form book...i am writing exact code
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t;
int main()
{
float a,x;
a=20.0;
x=30.0;
float *p,*q;
p=a,q=x;
swap(p,q,float*);
printf(%f %f,a,x);
getchar();
}
o/p=20.000 30.000
why not swapped???
On Mon, Oct 29, 2012 at 11:01 PM, atul anand atul.87fri...@gmail.comwrote:
if you think the your expanded version is incorrect.You are wrong ,
because int * will hold pointer but you are not allocating address of
x ..instead you are allocating x value as an address of x to *t.This
wont work.
so to make it work you need to save the address of x and y in temp
pointers i.e
int *p.*q;
p=x;
q=y;
int t;
t=*p;
*p=*q;
*q=t;
now you can convert it into macro.
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
@atul...mistakenly i have put w at place of t in my last post...i wana
say
On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com wrote:
Just replace your macro with its definition and you will understand.
its not doing swapping of pointers...plz explain
@dCode i expanded..but its fine...please tell
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int*);
int * t;
t=x;
x=y;
y=t;
There is int* at the end..there is som problem with my
keyborad...:(.acc to me axpanded version is above..but not
swapping
two pointerssplz comment
On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma
rahul23111...@gmail.comwrote:
its now doing swapping of pointers...plz explain
On Sun, Oct 28, 2012 at 8:08 PM, atul anand
atul.87fri...@gmail.comwrote:
it should swap
On 10/28/12, rahul sharma rahul23111...@gmail.com wrote:
Why the following code is not able to swap two macros???although it
is
easily swapping 2 variables
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int);
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Re: [algogeeks] C Macro
@rahul : dude it's working fine ...check your printf() statement you
are swapping the pointers and printing the original float values of a and x
it should be printf(%f%f,*p,*q);
or if you want to swap float values not the pointers then it should be
swap(a,x,float);
printf(%f%f,a,x);
On Mon, Oct 29, 2012 at 11:30 PM, atul anand atul.87fri...@gmail.comwrote:
well they should not , if you see it closely pointer p and q
contain contain address of a and x.
and swap() macro will swap value these pointers are holding i.e adress
of a and xbut will it reflect address of a and x ???...NO
so if you print the address p and q ...before and after the swap then
you should see that after swap p will be holding address of x and
q will be holding address of a..that it
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
I have taken form book...i am writing exact code
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t;
int main()
{
float a,x;
a=20.0;
x=30.0;
float *p,*q;
p=a,q=x;
swap(p,q,float*);
printf(%f %f,a,x);
getchar();
}
o/p=20.000 30.000
why not swapped???
On Mon, Oct 29, 2012 at 11:01 PM, atul anand
atul.87fri...@gmail.comwrote:
if you think the your expanded version is incorrect.You are wrong ,
because int * will hold pointer but you are not allocating address of
x ..instead you are allocating x value as an address of x to *t.This
wont work.
so to make it work you need to save the address of x and y in temp
pointers i.e
int *p.*q;
p=x;
q=y;
int t;
t=*p;
*p=*q;
*q=t;
now you can convert it into macro.
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
@atul...mistakenly i have put w at place of t in my last post...i
wana
say
On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com
wrote:
Just replace your macro with its definition and you will understand.
its not doing swapping of pointers...plz explain
@dCode i expanded..but its fine...please tell
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int*);
int * t;
t=x;
x=y;
y=t;
There is int* at the end..there is som problem with my
keyborad...:(.acc to me axpanded version is above..but not
swapping
two pointerssplz comment
On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma
rahul23111...@gmail.comwrote:
its now doing swapping of pointers...plz explain
On Sun, Oct 28, 2012 at 8:08 PM, atul anand
atul.87fri...@gmail.comwrote:
it should swap
On 10/28/12, rahul sharma rahul23111...@gmail.com wrote:
Why the following code is not able to swap two macros???although
it
is
easily swapping 2 variables
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int);
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Re: [algogeeks] C Macro
Yeah its working...actually it was written in book...and i did nt
compilemistake of author
On Tue, Oct 30, 2012 at 12:17 PM, Vikram Pradhan vpradha...@gmail.comwrote:
@rahul : dude it's working fine ...check your printf() statement you
are swapping the pointers and printing the original float values of a and x
it should be printf(%f%f,*p,*q);
or if you want to swap float values not the pointers then it should be
swap(a,x,float);
printf(%f%f,a,x);
On Mon, Oct 29, 2012 at 11:30 PM, atul anand atul.87fri...@gmail.comwrote:
well they should not , if you see it closely pointer p and q
contain contain address of a and x.
and swap() macro will swap value these pointers are holding i.e adress
of a and xbut will it reflect address of a and x ???...NO
so if you print the address p and q ...before and after the swap then
you should see that after swap p will be holding address of x and
q will be holding address of a..that it
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
I have taken form book...i am writing exact code
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t;
int main()
{
float a,x;
a=20.0;
x=30.0;
float *p,*q;
p=a,q=x;
swap(p,q,float*);
printf(%f %f,a,x);
getchar();
}
o/p=20.000 30.000
why not swapped???
On Mon, Oct 29, 2012 at 11:01 PM, atul anand
atul.87fri...@gmail.comwrote:
if you think the your expanded version is incorrect.You are wrong ,
because int * will hold pointer but you are not allocating address of
x ..instead you are allocating x value as an address of x to *t.This
wont work.
so to make it work you need to save the address of x and y in temp
pointers i.e
int *p.*q;
p=x;
q=y;
int t;
t=*p;
*p=*q;
*q=t;
now you can convert it into macro.
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
@atul...mistakenly i have put w at place of t in my last post...i
wana
say
On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com
wrote:
Just replace your macro with its definition and you will understand.
its not doing swapping of pointers...plz explain
@dCode i expanded..but its fine...please tell
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int*);
int * t;
t=x;
x=y;
y=t;
There is int* at the end..there is som problem with my
keyborad...:(.acc to me axpanded version is above..but not
swapping
two pointerssplz comment
On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma
rahul23111...@gmail.comwrote:
its now doing swapping of pointers...plz explain
On Sun, Oct 28, 2012 at 8:08 PM, atul anand
atul.87fri...@gmail.comwrote:
it should swap
On 10/28/12, rahul sharma rahul23111...@gmail.com wrote:
Why the following code is not able to swap two macros???although
it
is
easily swapping 2 variables
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int);
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For
Re: [algogeeks] C Macro
@atul...mistakenly i have put w at place of t in my last post...i wana say On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com wrote: Just replace your macro with its definition and you will understand. its not doing swapping of pointers...plz explain @dCode i expanded..but its fine...please tell #includestdio.h #define swap(a,b,c) c t;t=a,a=b,b=t int main int x=10,y=20; int *p,*q; swap(x,y,int*); int * t; t=x; x=y; y=t; There is int* at the end..there is som problem with my keyborad...:(.acc to me axpanded version is above..but not swapping two pointerssplz comment On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma rahul23111...@gmail.comwrote: its now doing swapping of pointers...plz explain On Sun, Oct 28, 2012 at 8:08 PM, atul anand atul.87fri...@gmail.comwrote: it should swap On 10/28/12, rahul sharma rahul23111...@gmail.com wrote: Why the following code is not able to swap two macros???although it is easily swapping 2 variables #includestdio.h #define swap(a,b,c) c t;t=a,a=b,b=t int main int x=10,y=20; int *p,*q; swap(x,y,int); -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
Re: [algogeeks] C Macro
if you think the your expanded version is incorrect.You are wrong , because int * will hold pointer but you are not allocating address of x ..instead you are allocating x value as an address of x to *t.This wont work. so to make it work you need to save the address of x and y in temp pointers i.e int *p.*q; p=x; q=y; int t; t=*p; *p=*q; *q=t; now you can convert it into macro. On 10/29/12, rahul sharma rahul23111...@gmail.com wrote: @atul...mistakenly i have put w at place of t in my last post...i wana say On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com wrote: Just replace your macro with its definition and you will understand. its not doing swapping of pointers...plz explain @dCode i expanded..but its fine...please tell #includestdio.h #define swap(a,b,c) c t;t=a,a=b,b=t int main int x=10,y=20; int *p,*q; swap(x,y,int*); int * t; t=x; x=y; y=t; There is int* at the end..there is som problem with my keyborad...:(.acc to me axpanded version is above..but not swapping two pointerssplz comment On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma rahul23111...@gmail.comwrote: its now doing swapping of pointers...plz explain On Sun, Oct 28, 2012 at 8:08 PM, atul anand atul.87fri...@gmail.comwrote: it should swap On 10/28/12, rahul sharma rahul23111...@gmail.com wrote: Why the following code is not able to swap two macros???although it is easily swapping 2 variables #includestdio.h #define swap(a,b,c) c t;t=a,a=b,b=t int main int x=10,y=20; int *p,*q; swap(x,y,int); -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
Re: [algogeeks] C Macro
I have taken form book...i am writing exact code
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t;
int main()
{
float a,x;
a=20.0;
x=30.0;
float *p,*q;
p=a,q=x;
swap(p,q,float*);
printf(%f %f,a,x);
getchar();
}
o/p=20.000 30.000
why not swapped???
On Mon, Oct 29, 2012 at 11:01 PM, atul anand atul.87fri...@gmail.comwrote:
if you think the your expanded version is incorrect.You are wrong ,
because int * will hold pointer but you are not allocating address of
x ..instead you are allocating x value as an address of x to *t.This
wont work.
so to make it work you need to save the address of x and y in temp
pointers i.e
int *p.*q;
p=x;
q=y;
int t;
t=*p;
*p=*q;
*q=t;
now you can convert it into macro.
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
@atul...mistakenly i have put w at place of t in my last post...i wana
say
On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com wrote:
Just replace your macro with its definition and you will understand.
its not doing swapping of pointers...plz explain
@dCode i expanded..but its fine...please tell
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int*);
int * t;
t=x;
x=y;
y=t;
There is int* at the end..there is som problem with my
keyborad...:(.acc to me axpanded version is above..but not
swapping
two pointerssplz comment
On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma
rahul23111...@gmail.comwrote:
its now doing swapping of pointers...plz explain
On Sun, Oct 28, 2012 at 8:08 PM, atul anand
atul.87fri...@gmail.comwrote:
it should swap
On 10/28/12, rahul sharma rahul23111...@gmail.com wrote:
Why the following code is not able to swap two macros???although it
is
easily swapping 2 variables
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int);
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Re: [algogeeks] C Macro
well they should not , if you see it closely pointer p and q
contain contain address of a and x.
and swap() macro will swap value these pointers are holding i.e adress
of a and xbut will it reflect address of a and x ???...NO
so if you print the address p and q ...before and after the swap then
you should see that after swap p will be holding address of x and
q will be holding address of a..that it
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
I have taken form book...i am writing exact code
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t;
int main()
{
float a,x;
a=20.0;
x=30.0;
float *p,*q;
p=a,q=x;
swap(p,q,float*);
printf(%f %f,a,x);
getchar();
}
o/p=20.000 30.000
why not swapped???
On Mon, Oct 29, 2012 at 11:01 PM, atul anand
atul.87fri...@gmail.comwrote:
if you think the your expanded version is incorrect.You are wrong ,
because int * will hold pointer but you are not allocating address of
x ..instead you are allocating x value as an address of x to *t.This
wont work.
so to make it work you need to save the address of x and y in temp
pointers i.e
int *p.*q;
p=x;
q=y;
int t;
t=*p;
*p=*q;
*q=t;
now you can convert it into macro.
On 10/29/12, rahul sharma rahul23111...@gmail.com wrote:
@atul...mistakenly i have put w at place of t in my last post...i wana
say
On Mon, Oct 29, 2012 at 10:07 AM, dCoder bansal@gmail.com wrote:
Just replace your macro with its definition and you will understand.
its not doing swapping of pointers...plz explain
@dCode i expanded..but its fine...please tell
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int*);
int * t;
t=x;
x=y;
y=t;
There is int* at the end..there is som problem with my
keyborad...:(.acc to me axpanded version is above..but not
swapping
two pointerssplz comment
On Sun, Oct 28, 2012 at 9:16 PM, rahul sharma
rahul23111...@gmail.comwrote:
its now doing swapping of pointers...plz explain
On Sun, Oct 28, 2012 at 8:08 PM, atul anand
atul.87fri...@gmail.comwrote:
it should swap
On 10/28/12, rahul sharma rahul23111...@gmail.com wrote:
Why the following code is not able to swap two macros???although
it
is
easily swapping 2 variables
#includestdio.h
#define swap(a,b,c) c t;t=a,a=b,b=t
int main
int x=10,y=20;
int *p,*q;
swap(x,y,int);
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Re: [algogeeks] C Macro
it should swap On 10/28/12, rahul sharma rahul23111...@gmail.com wrote: Why the following code is not able to swap two macros???although it is easily swapping 2 variables #includestdio.h #define swap(a,b,c) c t;t=a,a=b,b=t int main int x=10,y=20; int *p,*q; swap(x,y,int); -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
Re: [algogeeks] C Macro
didnt get you... first it was now working , now its working...!!! please write clearly about your doubts. -- You received this message because you are subscribed to the Google Groups Algorithm Geeks group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
