dev-cpp-users — Dev-C++ users discussion list

Re: [Dev-C++] Ascii and Binary help

[Reid T. <rei...@at...>]

Eric Edwards wrote:

> Scott,
>
> Try out this url:
>
> http://www.cprogramming.com/tutorial/cfileio.html
>
> Eric
>
> =20
>
> -----Original Message-----
> *From:* dev...@li...=20
> [mailto:dev...@li...] *On Behalf Of *Scott
> *Sent:* Wednesday, November 09, 2005 6:38 PM
> *To:* dev...@li...
> *Subject:* [Dev-C++] Ascii and Binary help
>
> =20
>
> Okay this is a hard question to phrase....
>
> I'm trying to do a simple command line
>
> utility in DevC, to write to a file.....
>
> =20
>
> Now i have no problems writing
>
> "Hello World" to the screen or text file.
>
> =20
>
> But how do i write a binary file?
>
> for example...
>
> =20
>
> The file i would like to store,
>
> looks like this when i cut and paste
>
> from notepad.
>
> =20
>
> "FORM  =88LWO2TAGS   Red Void  Void  LAYR   =12                  PNTS  =
=20
>             BBOX                           VMPA          =06VMAP   WGHT=
=20
> Void.Weight   ?=80  POLS   FACE   PTAG   COLR    PTAG   PART   PTAG  =20
> SURF   [1]SURF   =A6Void    COLR
> ?H=C8=C9?H=C8=C9?H=C8=C9  LUMI =06      DIFF       SPEC =06      TRAN  =
     RIND=20
> =06      BUMP       GLOS =06      VCOL ?=80    RGBAVoid.Vertex SMAN
> -----------------------------------------------------------------------=
-
> =80   RFOP [1]  TROP [1]"
>
> =20
>
> =20
>
> Now if i just cut and paste that and write it to a text file, like i=20
> do with Hello World, why does it not work?
>
> Strangely enough, when i compare the 1byte decimal values of my=20
> written version, and the original version..
>
> The first row of numbers are similar, but the 2nd row is different,=20
> and then all the rest similar or identical.....
>
> for example...=20
>
> =20
>
> 070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
> 000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
> 105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000
>
> =20
>
> 070 079 082 077 032 032 001 136 076 087 079 050 084 065 071 083
> 032 032 032 016 082 101 100 032 086 111 105 100 032 032 086 111
> 105 100 032 032 076 065 089 082 032 032 032 018 032 032 032 032
>
> =20
>
> Okay now the script i wrote that originally does this....
>
> -----------------------------------------------------------------------=
-------------------------------
>
> generic
>
> {
>
> output =3D File("test.obj","wb");
>
> output.writeData(test);
>
> output.close();
>
> @data test
>
> 070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
> 000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
> 105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000
>
> @end
>
> -----------------------------------------------------------------------=
-------------------------------------
>
> =20
>
> =20
>
> The main difference, being that WB is used in the script,
>
> which is obviously, Write Binary.....
>
> =20
>
> Any ideas on how i do the C equivilant?
>
> here is the sample C code...
>
> -----------------------------------------------------------------------=
-----
>
> #include <stdio.h>
> #include <stdlib.h>
> void main()
> {
> FILE *myfile;
> myfile =3D fopen("test.obj","wb");
> if(!myfile)
> {
> puts("Some kind of file error!");
> exit(0);
> }
> fprintf(myfile,"FORM  =88LWO2TAGS   Red Void  Void  LAYR  =20
> =12                  PNTS               BBOX                          =20
> VMPA          =06VMAP   WGHT Void.Weight   ?=80  POLS   FACE   PTAG  =20
> COLR    PTAG   PART   PTAG   SURF   [1]SURF   =A6Void    COLR
> ?H=C8=C9?H=C8=C9?H=C8=C9  LUMI =06      DIFF       SPEC =06      TRAN  =
     RIND=20
> =06      BUMP       GLOS =06      VCOL ?=80    RGBAVoid.Vertex SMAN
> -----------------------------------------------------------------------=
-
> =80   RFOP [1]  TROP [1]");
> fclose(myfile);
> }
>
> =20
>
> So can i use Fprintf, to write my variable "test" which is an an=20
> embedded 1byte decimal format?
>
> And get it written as binary?
>
> =20
>
> Could it perhaps be something like printf("%03d ",bytes[i] &0xff);}}=20
> (which is a rough  guess)
>
> =20
>
> Cheers,
>
> Scott.
>
> =20
>
http://www.die.net/doc/linux/man/man3/fwrite.3.html

#include <stdio.h>
#include <stdlib.h>

int
main()
{
    FILE *myfile;
    char  mydata[]=3D"FORM  =88LWO2TAGS   Red Void  Void  LAYR  =20
=12                  PNTS               BBOX                          =20
VMPA          =06VMAP   WGHT Void.Weight   ?=80  POLS   FACE   PTAG  =20
COLR    PTAG   PART   PTAG   SURF   [1]SURF   =A6Void    COLR\
?H=C8=C9?H=C8=C9?H=C8=C9  LUMI =06      DIFF       SPEC =06      TRAN    =
   RIND =06     =20
BUMP       GLOS =06      VCOL ?=80    RGBAVoid.Vertex SMAN =80   RFOP [1]=
 =20
TROP [1]";

myfile =3D fopen("test.obj","wb");
if(!myfile)
{
puts("Some kind of file error!");
exit(0);
}
fwrite(&mydata,sizeof(mydata),1,myfile);

fclose(myfile);
}

Re: [Dev-C++] Ascii and Binary help

[Scott <fre...@ve...>]

http://www.faqs.org/qa/qa-117.html

Cheers,
Scott.



  What is C Because i am using C++


  K.N.P

RE: [Dev-C++] Ascii and Binary help

[Eric E. <eri...@sb...>]

Scott,

Also try this site:

http://www.cprogramming.com/

Eric

 

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Scott
Sent: Wednesday, November 09, 2005 6:59 PM
To: Eric Edwards; dev...@li...
Subject: Re: [Dev-C++] Ascii and Binary help

 

 

Scott,

Try out this url:

http://www.cprogramming.com/tutorial/cfileio.html

Eric

 

Thanks, i will give it a read i did a google search

but mostly C++ mentions of binary functions...

 

As i'm only on page 47 of the "introduction to C"

from the Online DevC/C++ help.... (it's excellent)

Not even up to arrays, or function pointers yet..:)

So i'm trying to re-cover all of the basics...

 

But thanks sites like that help....

 

If anyone else knows of any good online C resources,

Library references or anything or reccomened a good book?

 

Cheers,

Scott.

 

Re: [Dev-C++] Ascii and Binary help

[Scott <fre...@ve...>]

  Scott,

  Try out this url:

  http://www.cprogramming.com/tutorial/cfileio.html

  Eric


Thanks, i will give it a read i did a google search
but mostly C++ mentions of binary functions...

As i'm only on page 47 of the "introduction to C"
from the Online DevC/C++ help.... (it's excellent)
Not even up to arrays, or function pointers yet..:)
So i'm trying to re-cover all of the basics...

But thanks sites like that help....

If anyone else knows of any good online C resources,
Library references or anything or reccomened a good book?

Cheers,
Scott.

RE: [Dev-C++] Ascii and Binary help

[Eric E. <eri...@sb...>]

Scott,

Try out this url:

http://www.cprogramming.com/tutorial/cfileio.html

Eric

=20

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Scott
Sent: Wednesday, November 09, 2005 6:38 PM
To: dev...@li...
Subject: [Dev-C++] Ascii and Binary help

=20

Okay this is a hard question to phrase....

I'm trying to do a simple command line

utility in DevC, to write to a file.....

=20

Now i have no problems writing=20

"Hello World" to the screen or text file.

=20

But how do i write a binary file?

for example...

=20

The file i would like to store,

looks like this when i cut and paste

from notepad.

=20

"FORM  =88LWO2TAGS   Red Void  Void  LAYR   =12                  PNTS
BBOX                           VMPA          =06VMAP   WGHT Void.Weight  =
 ?=80
POLS   FACE   PTAG   COLR    PTAG   PART   PTAG   SURF   [1]SURF   =
=A6Void
COLR=20
?H=C8=C9?H=C8=C9?H=C8=C9  LUMI =06      DIFF       SPEC =06      TRAN    =
   RIND =06      BUMP
GLOS =06      VCOL ?=80    RGBAVoid.Vertex SMAN=20

  _____ =20

=80   RFOP [1]  TROP [1]"

=20

=20

Now if i just cut and paste that and write it to a text file, like i do =
with
Hello World, why does it not work?

Strangely enough, when i compare the 1byte decimal values of my written
version, and the original version..

The first row of numbers are similar, but the 2nd row is different, and =
then
all the rest similar or identical.....

for example... =20

=20

070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000

=20

070 079 082 077 032 032 001 136 076 087 079 050 084 065 071 083
032 032 032 016 082 101 100 032 086 111 105 100 032 032 086 111
105 100 032 032 076 065 089 082 032 032 032 018 032 032 032 032

=20

Okay now the script i wrote that originally does this....

-------------------------------------------------------------------------=
---
--------------------------

generic

{

output =3D File("test.obj","wb");

output.writeData(test);

output.close();

@data test=20

070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000

@end

-------------------------------------------------------------------------=
---
--------------------------------

=20

=20

The main difference, being that WB is used in the script,=20

which is obviously, Write Binary.....

=20

Any ideas on how i do the C equivilant?

here is the sample C code...=20

-------------------------------------------------------------------------=
---

#include <stdio.h>
#include <stdlib.h>
void main()
{
FILE *myfile;
myfile =3D fopen("test.obj","wb");
if(!myfile)
{
puts("Some kind of file error!");
exit(0);
}
fprintf(myfile,"FORM  =88LWO2TAGS   Red Void  Void  LAYR   =12
PNTS               BBOX                           VMPA          =06VMAP  =
 WGHT
Void.Weight   ?=80  POLS   FACE   PTAG   COLR    PTAG   PART   PTAG   =
SURF
[1]SURF   =A6Void    COLR=20
?H=C8=C9?H=C8=C9?H=C8=C9  LUMI =06      DIFF       SPEC =06      TRAN    =
   RIND =06      BUMP
GLOS =06      VCOL ?=80    RGBAVoid.Vertex SMAN=20

  _____ =20

=80   RFOP [1]  TROP [1]");
fclose(myfile);
}

=20

So can i use Fprintf, to write my variable "test" which is an an =
embedded
1byte decimal format?

And get it written as binary?

=20

Could it perhaps be something like printf("%03d ",bytes[i] &0xff);}} =
(which
is a rough  guess)

=20

Cheers,

Scott.

=20

[Dev-C++] Ascii and Binary help

[Scott <fre...@ve...>]

Okay this is a hard question to phrase....
I'm trying to do a simple command line
utility in DevC, to write to a file.....

Now i have no problems writing=20
"Hello World" to the screen or text file.

But how do i write a binary file?
for example...

The file i would like to store,
looks like this when i cut and paste
from notepad.

"FORM  =01=CB=86LWO2TAGS   =10Red Void  Void  LAYR   =12                 =
 PNTS   =0C            BBOX   =18                        VMPA   =08      =
 =06VMAP   =18WGHT =01Void.Weight   ?=E2=82=AC  POLS   =08FACE =01  PTAG =
  =08COLR    PTAG   =08PART   =01PTAG   =08SURF   =02SURF   =C2=A6Void   =
 COLR =0E?H=C3=88=C3=89?H=C3=88=C3=89?H=C3=88=C3=89  LUMI =06      DIFF =
=06      SPEC =06      TRAN =06      RIND =06      BUMP =06      GLOS =
=06      VCOL =16?=E2=82=AC    RGBAVoid.Vertex SMAN =04=E2=82=AC   RFOP =
=02  TROP =02"


Now if i just cut and paste that and write it to a text file, like i do =
with Hello World, why does it not work?
Strangely enough, when i compare the 1byte decimal values of my written =
version, and the original version..
The first row of numbers are similar, but the 2nd row is different, and =
then all the rest similar or identical.....
for example... =20

070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000

070 079 082 077 032 032 001 136 076 087 079 050 084 065 071 083
032 032 032 016 082 101 100 032 086 111 105 100 032 032 086 111
105 100 032 032 076 065 089 082 032 032 032 018 032 032 032 032

Okay now the script i wrote that originally does this....
-------------------------------------------------------------------------=
-----------------------------
generic
{

output =3D File("test.obj","wb");

output.writeData(test);

output.close();

@data test=20

070 079 082 077 000 000 001 136 076 087 079 050 084 065 071 083
000 000 000 016 082 101 100 000 086 111 105 100 000 000 086 111
105 100 000 000 076 065 089 082 000 000 000 018 000 000 000 000

@end
-------------------------------------------------------------------------=
-----------------------------------


The main difference, being that WB is used in the script,=20
which is obviously, Write Binary.....

Any ideas on how i do the C equivilant?
here is the sample C code...=20
-------------------------------------------------------------------------=
---
#include <stdio.h>
#include <stdlib.h>
void main()
{
FILE *myfile;
myfile =3D fopen("test.obj","wb");
if(!myfile)
{
puts("Some kind of file error!");
exit(0);
}
fprintf(myfile,"FORM  =01=CB=86LWO2TAGS   =10Red Void  Void  LAYR   =12  =
                PNTS   =0C            BBOX   =18                        =
VMPA   =08       =06VMAP   =18WGHT =01Void.Weight   ?=E2=82=AC  POLS   =
=08FACE =01  PTAG   =08COLR    PTAG   =08PART   =01PTAG   =08SURF   =
=02SURF   =C2=A6Void    COLR =
=0E?H=C3=88=C3=89?H=C3=88=C3=89?H=C3=88=C3=89  LUMI =06      DIFF =06    =
  SPEC =06      TRAN =06      RIND =06      BUMP =06      GLOS =06      =
VCOL =16?=E2=82=AC    RGBAVoid.Vertex SMAN =04=E2=82=AC   RFOP =02  TROP =
=02");
fclose(myfile);
}

So can i use Fprintf, to write my variable "test" which is an an =
embedded 1byte decimal format?
And get it written as binary?

Could it perhaps be something like printf("%03d ",bytes[i] &0xff);}} =
(which is a rough  guess)

Cheers,
Scott.

Re: [Dev-C++] recursion help

[Richard G. <use...@ya...>]

Chris Irish wrote:

> Richard Gelling wrote:
>
>> Hi,
>>
>> I am working my way through Sams Teach yourself c++ in 21 days and am 
>> having a bit fof difficulty with recursion, could someone explain to 
>> me how the following oiece of code works:
>>
>> #ifdef HAVE_CONFIG_H
>> #include <config.h>
>> #endif
>>
>> #include <iostream>
>> #include <cstdlib>
>>
>> using namespace std;
>>
>> int toPowerOf( int , int );
>> int main(int argc, char *argv[])
>> {
>>    int powerOf, number, result;
>>    cout << "\nEnter the number: ";
>>    cin >> number;
>>    cout << "\nEnter the exponential: ";
>>    cin >> powerOf;
>>      result = toPowerOf( number, powerOf );
>>      cout << "\nThe result of " << number << "  to the power of " << 
>> powerOf << " is " << result << endl;
>>      return 0;
>> }
>> int toPowerOf( int number, int powerOf )
>> {
>>     if ( powerOf == 1 )
>>        return number;
>>     else
>>    {
>>        cout << "number is: " << number << " and the power of is " << 
>> powerOf << endl;
>>        return ( number  * toPowerOf( number, powerOf - 1 ));
>>    }
>>   }
>>
>> If someone could explain how the recusion side workd I would be 
>> gratefull, as I don't seem to be getting anywhere.
>>
>> Thanks a lot
>> Richard G.
>>
>>
> Note: Expand this window till you have the columns all lined up in my 
> explanation below.
>
> Well I'm by no means a master of recursion but I believe this example 
> works like this...... someone correct me if I'm wrong.  Recursion uses 
> the a stack for each call to the recursive function.  So the first 
> call is made, lets say with the values (2,3).  Then the first call 
> calls itself but with the values (2,2) now, pushing its call onto the 
> stack (like a stack of plates). Then the second call calls itself 
> again with the values (2,1).... now in the third call..... powerOf == 
> 1, so this stops the recursive calls and the returned value is the 
> 2......that call is popped off the stack and that returned 2 it 
> multiplied by the 2 in the second call, then the returned value is 
> (2*2), the second call is now popped off the stack and that returned 
> (2*2) is multiplied by the last 2 (which is the first call's 2)....... 
> so then "result" is set to 8 which is 2^3.
>
> //push                    //push                     //push then 
> pop'd                 //pop                                           
> //pop
> toPowerOf(2,3)    toPowerOf(2,2)      toPowerOf(2,1) //returns 2   
> toPowerOf(2,2) //returns (2*2)   toPowerOf(2,3)
>                             toPowerOf(2,3)      toPowerOf(2,2)      
>              toPowerOf(2,3)
>                                                            toPowerOf(2,3)
>
> The last one returns 2*2*2
>
> Hope that helps...... I find recursion difficult too :)
>
>
> -------------------------------------------------------
> SF.Net email is sponsored by:
> Tame your development challenges with Apache's Geronimo App Server. 
> Download
> it for free - -and be entered to win a 42" plasma tv or your very own
> Sony(tm)PSP.  Click here to play: http://sourceforge.net/geronimo.php
> _______________________________________________
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> Dev...@li...
> TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>
Thanks for that everyone, that's made it clearer, I think I was 
suffering from a mental block,

[Dev-C++] Re: Re: Recursion Dev-cpp-users digest, Vol 1 #2597 - 7 msgs

[<ps...@ma...>]

> Richard Gelling <use...@ya...> wrote

> Hi,

> I am working my way through Sams Teach yourself c++ in 21 days and am having a bit fof difficulty with recursion, 
> could someone explain to me how the following oiece of code works:

This reminds me of the old adage: to understand recursion, first, one
must understand recursion.

This may not have helped much, but some day in the future, we'll all
look back on this moment and laugh.

-- 
http://www.fastmail.fm - Access your email from home and the web

Re: [Dev-C++] recursion help

[Robert A. <ral...@gm...>]

Recursion works by solving a simpler problem. In the case above you know
that if you raise any number to the 1st power then you get that number back=
,
Otherwise you can get the result by multipling the number by the number
raised to the initial power minus one.

So if I am going to raise 10 to the third power ie pow(10,3)

pow(10,3)=3D10*pow(10,2)
pow(10,2)=3D10*pow(10,1)
pow(10,1)=3D10

So... now backing up as each function returns you get
pow(10,3)=3D10*10*10



On 11/8/05, Richard Gelling <use...@ya...> wrote:
>
> Hi,
>
> I am working my way through Sams Teach yourself c++ in 21 days and am
> having a bit fof difficulty with recursion, could someone explain to me
> how the following oiece of code works:
>
> #ifdef HAVE_CONFIG_H
> #include <config.h>
> #endif
>
> #include <iostream>
> #include <cstdlib>
>
> using namespace std;
>
> int toPowerOf( int , int );
> int main(int argc, char *argv[])
> {
> int powerOf, number, result;
> cout << "\nEnter the number: ";
> cin >> number;
> cout << "\nEnter the exponential: ";
> cin >> powerOf;
>
> result =3D toPowerOf( number, powerOf );
>
> cout << "\nThe result of " << number << " to the power of " <<
> powerOf << " is " << result << endl;
>
> return 0;
> }
> int toPowerOf( int number, int powerOf )
> {
> if ( powerOf =3D=3D 1 )
> return number;
> else
> {
> cout << "number is: " << number << " and the power of is " <<
> powerOf << endl;
> return ( number * toPowerOf( number, powerOf - 1 ));
> }
> }
>
> If someone could explain how the recusion side workd I would be
> gratefull, as I don't seem to be getting anywhere.
>
> Thanks a lot
>
> Richard G.
>
>
>
>
> -------------------------------------------------------
> SF.Net email is sponsored by:
> Tame your development challenges with Apache's Geronimo App Server.
> Download
> it for free - -and be entered to win a 42" plasma tv or your very own
> Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> TO UNSUBSCRIBE: http://www23.brinkster.com/noicys/devcpp/ub.htm
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>

Re: [Dev-C++] recursion help

[Chris I. <chr...@li...>]

Looks like the formatting came out all screwy..... here's a screenshot 
of what it should look like

Later, Chris

Re: [Dev-C++] recursion help

[Chris I. <chr...@li...>]

Richard Gelling wrote:

> Hi,
>
> I am working my way through Sams Teach yourself c++ in 21 days and am 
> having a bit fof difficulty with recursion, could someone explain to 
> me how the following oiece of code works:
>
> #ifdef HAVE_CONFIG_H
> #include <config.h>
> #endif
>
> #include <iostream>
> #include <cstdlib>
>
> using namespace std;
>
> int toPowerOf( int , int );
> int main(int argc, char *argv[])
> {
>    int powerOf, number, result;
>    cout << "\nEnter the number: ";
>    cin >> number;
>    cout << "\nEnter the exponential: ";
>    cin >> powerOf;
>      result = toPowerOf( number, powerOf );
>      cout << "\nThe result of " << number << "  to the power of " << 
> powerOf << " is " << result << endl;
>      return 0;
> }
> int toPowerOf( int number, int powerOf )
> {
>     if ( powerOf == 1 )
>        return number;
>     else
>    {
>        cout << "number is: " << number << " and the power of is " << 
> powerOf << endl;
>        return ( number  * toPowerOf( number, powerOf - 1 ));
>    }
>   }
>
> If someone could explain how the recusion side workd I would be 
> gratefull, as I don't seem to be getting anywhere.
>
> Thanks a lot
> Richard G.
>
>
Note: Expand this window till you have the columns all lined up in my 
explanation below.

Well I'm by no means a master of recursion but I believe this example 
works like this...... someone correct me if I'm wrong.  Recursion uses 
the a stack for each call to the recursive function.  So the first call 
is made, lets say with the values (2,3).  Then the first call calls 
itself but with the values (2,2) now, pushing its call onto the stack 
(like a stack of plates). Then the second call calls itself again with 
the values (2,1).... now in the third call..... powerOf == 1, so this 
stops the recursive calls and the returned value is the 2......that call 
is popped off the stack and that returned 2 it multiplied by the 2 in 
the second call, then the returned value is (2*2), the second call is 
now popped off the stack and that returned (2*2) is multiplied by the 
last 2 (which is the first call's 2)....... so then "result" is set to 8 
which is 2^3.

//push                    //push                     //push then pop'd   
               //pop                                           //pop
toPowerOf(2,3)    toPowerOf(2,2)      toPowerOf(2,1) //returns 2   
toPowerOf(2,2) //returns (2*2)   toPowerOf(2,3)
                             toPowerOf(2,3)      toPowerOf(2,2)      
              toPowerOf(2,3)
                                                            toPowerOf(2,3)

The last one returns 2*2*2

Hope that helps...... I find recursion difficult too :)

[Dev-C++] recursion help

[Richard G. <use...@ya...>]

Hi,

I am working my way through Sams Teach yourself c++ in 21 days and am 
having a bit fof difficulty with recursion, could someone explain to me 
how the following oiece of code works:

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <iostream>
#include <cstdlib>

using namespace std;

int toPowerOf( int , int );
int main(int argc, char *argv[])
{
    int powerOf, number, result;
    cout << "\nEnter the number: ";
    cin >> number;
    cout << "\nEnter the exponential: ";
    cin >> powerOf;
   
    result = toPowerOf( number, powerOf );
   
    cout << "\nThe result of " << number << "  to the power of " << 
powerOf << " is " << result << endl;
   
    return 0;
}
int toPowerOf( int number, int powerOf )
{
     if ( powerOf == 1 )
        return number;
     else
    {
        cout << "number is: " << number << " and the power of is " << 
powerOf << endl;
        return ( number  * toPowerOf( number, powerOf - 1 ));
    }
   }

If someone could explain how the recusion side workd I would be 
gratefull, as I don't seem to be getting anywhere.

Thanks a lot

Richard G.

Re: [Dev-C++] EOL style issue

[massimiliano c. <ci...@gm...>]

On 11/8/05, Per Westermark <pw...@ia...> wrote:
> Do you open the files as binary or as text?
as text (default)

--
Massimiliano Cialdi
ci...@gm...
m.c...@ok...

Re: [Dev-C++] EOL style issue

[Per W. <pw...@ia...>]

Do you open the files as binary or as text?

/Per W

On Tue, 8 Nov 2005, massimiliano cialdi wrote:

> I use mingw-gcc 3.4.2 provided by DevCpp 4.9.9.2 beta 9.
> It seems that gcc (or only some components like libstdc++) is compiled
> using unix style EOL (LF) instead of win style (CR+LF).
> I have tested it with a simple program that read lines from a text
> file and print them out.
>
> http://mastupristi.altervista.org/test_ifstream.zip
> Here is the sample project. There are two text file: testunix.test and
> testwin.test (with different EOL style). If you try to execute the
> program you can see that it works properly only with testunix.test.
> Now the question is: "How can I make it works with windows style EOL?"
>
> please note that compiling with mingw-gcc 3.2.3, or under linux, the
> programs works well...
>
> thanks
>
> --
> Massimiliano Cialdi
> ci...@gm...
> m.c...@ok...
>
>
> -------------------------------------------------------
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>

[Dev-C++] EOL style issue

[massimiliano c. <ci...@gm...>]

I use mingw-gcc 3.4.2 provided by DevCpp 4.9.9.2 beta 9.
It seems that gcc (or only some components like libstdc++) is compiled
using unix style EOL (LF) instead of win style (CR+LF).
I have tested it with a simple program that read lines from a text
file and print them out.

http://mastupristi.altervista.org/test_ifstream.zip
Here is the sample project. There are two text file: testunix.test and
testwin.test (with different EOL style). If you try to execute the
program you can see that it works properly only with testunix.test.
Now the question is: "How can I make it works with windows style EOL?"

please note that compiling with mingw-gcc 3.2.3, or under linux, the
programs works well...

thanks

--
Massimiliano Cialdi
ci...@gm...
m.c...@ok...

[Dev-C++] Matt Freeman/Tomax Corporation is out of the office.

[<MFr...@to...>]

I will be out of the office starting  11/05/2005 and will not return until
11/15/2005.

I will be reviewing all messages when I return and will respond as promptly
as possible at that time.

Thank You.

******************************
Matt Freeman
Tomax Corporation
Phone - 801.924.6300 ext. 6353
Fax - 801.415.6553
mfr...@to...
http://www.tomax.com/
******************************

[Dev-C++] Operators involving smart pointers

[Frans E. <fra...@te...>]

Hello all,

I have a design problem which I don't know how to solve the best way.

In my code I almost exclusively handle heap allocated objects, and accesses 
them via reference counting pointers(the counting is in the object, not the 
pointer).

The problem emerges when invoking operators between objects. This looks for 
example like this[1]:

Cardinality::Ptr(&(*opCard | *Cardinality::zeroOrOne))));

Evidently, this is not very pretty, when compared to the expression:

opCard | Cardinality::zeroOrOne

I'm taking the "| operator" as a representative example of my general problem. 
It's signature looks like this:

Cardinality &operator|(const Cardinality &other) const;

I wonder, should I add/change operators such that using the classes are more 
convenient? For example, I could change the operator to:

Cardinality::Ptr &operator|(const Cardinality::Ptr &other) const;

and thus reduce "Cardinality::Ptr(&(*opCard | *Cardinality::zeroOrOne))));" 
into "*opCard | Cardinality::zeroOrOne".

Another alternative is to add in the default namespace:

inline Cardinality::Ptr operator(const Cardinality::Ptr &o1, const 
Cardinality:Ptr &o2) /* ... */

which probably is the cleanest solution, and would result in "opCard | 
Cardinality::zeroOrOne"

What makes me wonder is that I don't want to couple a smart pointer, which is 
more of a tool for memory management, to my classes(although they wouldn't 
live without the smart pointer). Somehow, I want to keep it modularized and 
separated. 

On the other hand, "Cardinality::Ptr(&(*opCard | *Cardinality::zeroOrOne))))" 
is very ugly, and perhaps a freestanding operator involving Cardinality::Ptr 
is modularized enough.

What do people think? What is the cleanest solution? pros/cons?


Cheers,

		Frans

1.
Nope, I'm not defeferencing a temporary object because the | operator returns 
a (valid) reference.

Re: [Dev-C++] How do I declare a template class variable and make an instance seperately?

[Marcelo D. <mds...@ya...>]

 I think you can't call a constructor like a
 function.
 You need a Set() Method or this:
 
 --- in main() ---
  HEAP<ELEMENT> A(10);     //THIS WORKS FINE
 /******>>> not here 
  HEAP<ELEMENT> B;          // I CAN'T DO  THIS
 *******/
  THOUGH...why?? how can
  I??
  
  int size;
  
  cout << "Give the desired size of this heap: " <<
  endl;
  cin >> size;
 /*****>>> here <<<*****/
  HEAP<ELEMENT> B(size);          // I CAN'T DO  THIS
  INSTANTIATE B DOWN HERE
 
 
 (o_o) - mds
 GATBRASIL
 
 


	



	
		
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Re: [Dev-C++] How do I declare a template class variable and make an instance seperately?

[Richard V. W. <ric...@ai...>]

Hi,

You are creating an object called B, but there is no default constructor 
for the class (a constructor with no parameters).
The only constructor takes an int parameter.

As I see it you want to be able to modify the heap size dynamically,

So maybe you can add a method called SetHeapSize(int i) that takes care of 
assigning or freeing memory, and this can be called anytime.

You can only create an object once.

Another aproach..
Not sure about template classes, but perhaps you can declare a POINTER to 
an object and call it B

and Create the object later on using 'new'.

Cheers,


Richard 

[Dev-C++] How do I declare a template class variable and make an instance seperately?

[Chris I. <chr...@li...>]

Hello all :)
Hopefully someone can shed some light on this problem I'm having.  I'm
trying to declare a variable to a type of class I've defined (which is
a minHeap), but actually instantiate it later when I get a command from
the user.  This is my class and if you look down a lil you can see what
I'm trying to do in my main().  I want to ask for the size from the
user, but when I try to I can't get my code to compile.  Here is the
class definition and the constructor.  This is the error I'm getting.

/Users/ci/minheap/minheap.h:42: error: prototype for 'HEAP<T>::HEAP()'
does not match any in class 'HEAP<T>'

I've been reading up on smart pointers but i'm not sure if that's what
I'm suppose to be using.  Any help/info would help me alot.......
THANKS

#-------------------------------------------------------------
#include <cstdlib>
#include <iostream>
using namespace std;

struct ELEMENT{int key;};

template<class T>
class HEAP {
   public:
        HEAP(int n);
        ~HEAP(){ delete [] heap;}
        T Min(){if (CurrentSize == 0)
                                throw OutOfBounds();
                        return heap[0];}

        HEAP<T>& Insert(int k);
        int DeleteMin();

        void printHeap() const;

   private:
        int CurrentSize, Capacity;
        T *heap;                                // element array

};

template<class T>
HEAP<T>::HEAP(int n){                             //constructor.
        Capacity    = n;
        cout << "Heap's Capacity is: " << Capacity << endl;
        heap        = new ELEMENT[Capacity];
        CurrentSize = 0;
}

int main(void){

HEAP<ELEMENT> A(10);     //THIS WORKS FINE
HEAP<ELEMENT> B;          // I CAN'T DO  THIS THOUGH...why?? how can
I??

int size;

cout << "Give the desired size of this heap: " << endl;
cin >> size;
B(size);                      // I WANT TO INSTANTIATE B DOWN HERE
}

Re: [Dev-C++] How to test type of variable?? Newb question

[cwic <cw...@ma...>]

Hello Chris,

Thursday, November 3, 2005, 11:57:07 PM, you wrote:

CI> Hello all.... 1st post here
welcome! ;)

CI> I was hoping someone could tell me how you test the datatype of a 
CI> variable in C++?
Run-time type information (RTTI) is a mechanism that allows the type
of an object to be determined during program execution.
http://search.microsoft.com/search/results.aspx?qu=RTTI&View=msdn&st=b&c=4&s=1&swc=4

-- 
Best regards,
 cwic                            mailto:cw...@ma...

[Dev-C++] How to test type of variable?? Newb question

[Chris I. <chr...@li...>]

Hello all.... 1st post here

I was hoping someone could tell me how you test the datatype of a 
variable in C++?
Like if I declare

struct ELEMENT{int key;} variable1;

OR

int variable2 = 10;

How can I type check variable1 or variable2?

I mostly write in Python and I'm looking for something like
type(variable1)                #would return the datatype of variable1
or
isinstance(variable2, int)  #would return true is variable2 is a 
instance of the int class

Thanks in advance,
Chris

[Dev-C++] unable to work with PSDK

[warbad c. <wa...@ya...>]

Hello all,

I'm new here, so i hope i'll make no mistake posting
my problem.

I've wrote a quick test program in c:

#ifndef DOMAIN_H
#define DOMAIN_H

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <lm.h>

#endif /* DOMAIN_H */

#include "domain.h"

int main(int argc, char *argv[])
{
  NET_API_STATUS res;

  printf("You're about to change the computer name to
%s\n", argv[1]);
  
  res = NetRenameMachineInDomain (
  NULL, argv[1], "myaccount" , "mypassword",
NETSETUP_ACCT_CREATE);
  
  if (res != NERR_Success) { printf("Error!!!\n"); }
  
  system("PAUSE");	
  return 0;
}


I setup (i think correctly) the link to libs,
includes, etc.. 
but when i try to compile i have many many errors :

Compiler: Default compiler
Building Makefile: "D:\Documents and
Settings\dev\Domain\Makefile.win"
Executing  make...
make.exe -f "D:\Documents and
Settings\dev\Domain\Makefile.win" all
gcc.exe -D__DEBUG__ -c domain.c -o domain.o
-I"C:/Program Files/Microsoft Platform SDK/Include" 
-I"C:/Program Files/Microsoft Platform SDK/Include"   
-Wall -g -g3
In file included from domain.h:6,
                 from domain.c:1:
C:/Program Files/Microsoft Platform
SDK/Include/windows.h:157:19: excpt.h: No such file or
directory
In file included from C:/Program Files/Microsoft
Platform SDK/Include/winnt.h:99,
                 from C:/Program Files/Microsoft
Platform SDK/Include/windef.h:176,
                 from C:/Program Files/Microsoft
Platform SDK/Include/windows.h:161,
                 from domain.h:6,
                 from domain.c:1:
C:/Program Files/Microsoft Platform
SDK/Include/basetsd.h:63: error: parse error before
"INT64"
C:/Program Files/Microsoft Platform
SDK/Include/basetsd.h:63: warning: type defaults to
`int' in declaration of `INT64'
[...]


I never succeed to write a program with the PSDK.
If someone can help, he'll be great

Thank in advance.
Vincent


	

	
		
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RE: [Dev-C++] C#

[Guillermo G. <ggu...@ma...>]

Tell you what Kishan,=20
Email me directly, I think I can help you out.

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...]On Behalf Of Per
Westermark
Sent: Wednesday, November 02, 2005 11:03 PM
To: KISHAN PATEL
Cc: eri...@sb...; gc...@gc...;
dev...@li...
Subject: RE: [Dev-C++] C#


Sorry, nobody knows how to do it in C# with Dev-C++. Dev-C++ is for C =
and
C++ programs...

/Per W

On Wed, 2 Nov 2005, KISHAN PATEL wrote:

>
> Does anyone know how to write a program that should read two numbers =
and then find the smaller one and find it's square and then divide by 2
>
>
>
>
> K.N.P
>
> =
_________________________________________________________________________=
_________________________________________________________________________=
_
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RE: [Dev-C++] C#

[Per W. <pw...@ia...>]

Sorry, nobody knows how to do it in C# with Dev-C++. Dev-C++ is for C and
C++ programs...

/Per W

On Wed, 2 Nov 2005, KISHAN PATEL wrote:

>
> Does anyone know how to write a program that should read two numbers and then find the smaller one and find it's square and then divide by 2
>
>
>
>
> K.N.P
>
> ___________________________________________________________________________________________________________________________________________________
> Search, shop, and browse smarter using tabs with the MSN Search Toolbar-FREE! ------------------------------------------------------- SF.Net
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