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

[Dev-C++] SFOpenError

[Bob W. <bo...@ph...>]

Can anyone who has down loaded the source for version 4.01 tell me in =
"Util.pas" in line 57:

        "if Source < 0 then raise EFOpenError.CreateFmt(SFOpenError, =
[FileName]);"

where "SFOpenError" is defined? When I try to build dev-cpp I get a =
error that says:

    "[Error] Utils.pas(60): Undeclared identifier: 'SFCreateError'"

which, of course, leads to a fatal error in the build process because it =
can not compile the required "Utils.pas".=20

Thanks,

Bob

RE: [Dev-C++] ioannis - namespaces

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Ioannis Vranos
> Sent: Tuesday, June 18, 2002 2:09 PM
> To: dev...@li...
> Subject: RE: [Dev-C++] ioannis - namespaces
> 
> 
> > -----Original Message-----
> > From: dev...@li... 
> > [mailto:dev...@li...] On Behalf 
> > Of Daniel Glenfield
> > Sent: Tuesday, June 18, 2002 1:36 PM
> > To: dev...@li...
> > Subject: [Dev-C++] ioannis - namespaces
> > 
> > 
> > Ioannis, you've mentioned several times to always use 
> > namespaces as locally 
> > as possible. I was wondering why this is? What is the benefit 
> > of using them 
> > locally?
> > 
> > Daniel
> 
> 
> The namespace system was made to provide a system that 
> enables combining
> various libraries while protecting from name clashes.
> 
> So you can for example do:
> 
> #include <iostream>
  
  #include <vector>

> 
> // Daniel's version of vector
> #include <daniel.h>
> 
> 
> int main()
> {
>  using std::cout;

   using std::endl;

>  using daniel::vector;
> 
>  vector<int>array(50, 1);
> 
>  cout<<array[i]<<endl;
> }
> 
> 
> As god says in TC++PL, using global using directives is an efffort to
> defeat the namespace system, which has bad consequences in large
> projects. We must try to use more using std::something; than using
> namespace std; and as in small scope as possible.
> 
> In general myself, i use using std::something; for 2-3 facilities in a
> given function, and if there are more i place a using 
> namespace std; in
> that function scope.
> 
> 
> Ioannis
> 
> * Ioannis Vranos
> * Programming pages: http://www.noicys.cjb.net
> * Alternative URL: http://run.to/noicys
> 
> --------------------------------------------------------------
> --------------
>                    Bringing you mounds of caffeinated joy
>                       >>>     http://thinkgeek.com/sf    <<<
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> 

RE: [Dev-C++] ioannis - namespaces

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Daniel Glenfield
> Sent: Tuesday, June 18, 2002 1:36 PM
> To: dev...@li...
> Subject: [Dev-C++] ioannis - namespaces
> 
> 
> Ioannis, you've mentioned several times to always use 
> namespaces as locally 
> as possible. I was wondering why this is? What is the benefit 
> of using them 
> locally?
> 
> Daniel


The namespace system was made to provide a system that enables combining
various libraries while protecting from name clashes.

So you can for example do:

#include <iostream>

// Daniel's version of vector
#include <daniel.h>


int main()
{
 using std::cout;
 using daniel::vector;

 vector<int>array(50, 1);

 cout<<array[i]<<endl;
}


As god says in TC++PL, using global using directives is an efffort to
defeat the namespace system, which has bad consequences in large
projects. We must try to use more using std::something; than using
namespace std; and as in small scope as possible.

In general myself, i use using std::something; for 2-3 facilities in a
given function, and if there are more i place a using namespace std; in
that function scope.


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
* Alternative URL: http://run.to/noicys

Re: [Dev-C++] Dev-C++ .hlp files

[Hongli L. <h....@ch...>]

Douglas J van Vliet wrote:

> Hi,
>  
> Where can I get more documentation regarding the use of Dev-C++ IDE?
>  
> 1. How do I get Code Completion to work?


Look in the configuration dialogs.

> 2. How can I get more information on .rc files for Dev-C++?


msdn.microsoft.com

> 3. I downloaded the .DevPak file - How do I install it?
>  


How about following the installation instructions.

[Dev-C++] Access Violation

[Ramana K. <ra...@my...>]

After compiling a file, when pressing the "Execute" button, Dev-C++ gives an
Access Violation error at a specified address.
At least this is what used to happen for me (and i heard this happened to
some other people)
now, when i press "Execute", dev-c++ simply closes and my program runs...
but after, i have to reopen dev-c++ to look at the source again. this
happens even when using "Compile & Execute".
is something already being done about this?

Further, if i open (double click on) a .cpp file from windows explorer,
dev-c++ opens, but does not open that file.

I am using Windows XP (Home ed) and Dev-C++ 4.9.3.0
thanks, :)
Ramana

[Dev-C++] ioannis - namespaces

[Daniel G. <sp...@ho...>]

Ioannis, you've mentioned several times to always use namespaces as locally 
as possible. I was wondering why this is? What is the benefit of using them 
locally?

Daniel

_________________________________________________________________
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Re: [Dev-C++] making .a files

[Carlos d. M. <cg...@wo...>]

There is no option in file -> new project to make only the .a file, at
least in Dev-C++ 4. There are only windows, console, winmain, dll and
empty.
But I tried to open a new DLL and compile it wothout touch the basic
template, and in the output are the .def, the .dll and the .a file. I
suppose then that if you want make an .a file you have just to make a
dll. It is valid I'll suppose while no other thing is said. [I don't
know yet program them, but I am trying to write an application to
convert MSVC project to DEV-C++ project]

Hongli Lai escribi=F3:

> Carlos Garc=EDa del Monte wrote:
>
> >Hi:
> >Is it possible to build .a files with Dev? How? (Which compiler
> >option...)
> >I don't find any info in the help files I have.
> >Thank you.
> >
> >
> >
>
> File->New Project->Static Library (.a) ?

[Dev-C++] Dev-C++ .hlp files

[Douglas J v. V. <do...@gl...>]

Hi,

Where can I get more documentation regarding the use of Dev-C++ IDE?

1. How do I get Code Completion to work?
2. How can I get more information on .rc files for Dev-C++?
3. I downloaded the .DevPak file - How do I install it?

Win 2000 Pro
256MB RAM

Regards


Dougie

Re: [Dev-C++] Downloading wxWindows package

[JAIME E. <jae...@ya...>]

Hi.
The better plac to download wx is sourceforge. Look for wxWindows there and will be no problem.
You will have to compile it. 
  Hongli Lai <h....@ch...> wrote: Napoleon Ahiable wrote:

> Hi,
> I tried to download the wxWindows package from the bloodshed/dev site 
> but I noticed that the extension was .DevPak which posed a problem for 
> me. I use Opera and when I click or double click I get garbage on the 
> screen. I suspect the browser does not know how to handle the extention.
> 
> How will I be able to download the wxWindows package please.
> 
> Napoleon.
> 


Right click->Save Target




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Re: [Dev-C++] Downloading wxWindows package

[Hongli L. <h....@ch...>]

Napoleon Ahiable wrote:

> Hi,
> I tried to download the wxWindows package from the bloodshed/dev site 
> but I noticed that the extension was .DevPak which posed a problem for 
> me. I use Opera and when I click or double click I get garbage on the 
> screen. I suspect the browser does not know how to handle the extention.
>  
> How will I be able to download the wxWindows package please.
>  
> Napoleon.
>  


Right click->Save Target

Re: [Dev-C++] making .a files

[Hongli L. <h....@ch...>]

Carlos García del Monte wrote:

>Hi:
>Is it possible to build .a files with Dev? How? (Which compiler
>option...)
>I don't find any info in the help files I have.
>Thank you.
>
>  
>

File->New Project->Static Library (.a) ?

[Dev-C++] Downloading wxWindows package

[Napoleon A. <nah...@so...>]

Hi,
I tried to download the wxWindows package from the bloodshed/dev site =
but I noticed that the extension was .DevPak which posed a problem for =
me. I use Opera and when I click or double click I get garbage on the =
screen. I suspect the browser does not know how to handle the extention.

How will I be able to download the wxWindows package please.

Napoleon.



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[Dev-C++] making .a files

[Carlos d. M. <cg...@wo...>]

Hi:
Is it possible to build .a files with Dev? How? (Which compiler
option...)
I don't find any info in the help files I have.
Thank you.

Re: [Dev-C++] Configure, make, and assorted flowers

[Abhijit S. <mu...@gm...>]

Thanks for the help. I downloaded MSYS. It's working fine, but it seems
very, I dunno, incomplete... thinking of downloading the complete Cygwin...
:)

--------------------------
http://mudeth.tripod.com

Re: [Dev-C++] threads issue...

[Mac R. <re...@no...>]

Don't poll for thread exit.  See WaitForSingleObject(), if you only need to
wait for one thread, or WaitForMultipleObjects() if you are just going to
sit there until all of the threads exit (common in the main() routine).
The easiest way to look these functions up is to use Google (
http://www.google.com ) and just type in the function name -- Google
indexes Microsofts Dev Network better than Microsoft does...  The following
link should get you started.  PLEASE READ THE ENTIRE PAGE.  Microsoft likes
to hide extremely important information in the "Remarks" section.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/syn
chro_4ldg.asp

That should all be on one line -- if it isn't, please reconstruct it (or
just use Google -- this was the first entry on the result page for
"waitforsingleobject" (I'm lazy and don't specify letter case in searches...).

Also, please be aware of the fact that C++ does not have ANY thread support
at all.  Any threading you do will be system dependent.  The closest you
can get to "C++ threads" would be the portable threading library that is
part of BOOST (http://www.boost.org).  I haven't had a chance to work with
BOOST yet, but by all reports, getting yourself a good STL implementation
(like from http://www.stlport.org) and then strapping in the newest BOOST
classes gives you a really nice set of tools to work with.  The C++
committe is looking seriously at BOOST for possible inclusion in the next
C++ standard, so you may want to start familiarizing yourself now.  Also,
code built with the BOOST threading libraries stands the best chance of
being both cross platform portable and surviving through future standards
revisions.

(Just to avoid the response -- another "standard" threading system is POSIX
threads, or pthreads.  pthreads is indeed fairly standard across UNIX-ish
OSs, but not particularly supported under Windows.  The BOOST libraries are
reported to work on at least the major platforms.)

http://www.boost.org/libs/thread/doc/overview.html

Mac

At 05:37 PM 6/16/02 +0530, Abhijit Shylanath wrote:
>>       do
>>       {
>>         GetExitCodeThread(hThread, &exit_code);
>>       } while(exit_code == STILL_ACTIVE);
>>       cout << "\n Thread " << i+1 << " has completed.\n";
>
>
>I almost fergot... polling GetExitCodeThread() can be very CPU intensive, so
>you might want to Sleep() in between polls, as in
>
>do
>{
>   GetExitCodeThread(hThread, &exit_code);
>   Sleep(DELAY);
>} while(exit_code == STILL_ACTIVE);
>
>DELAY can be 100 or more or less, I dunno, depending on the need for speed.
>
>I don't know of any synchornous method to do this.
>

-
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RE: [Dev-C++] Configure, make, and assorted flowers

[Hongli L. <h....@ch...>]

On Mon, 2002-06-17 at 12:39, Andres Rand wrote:
> I reccomend to download msys package. It is more sutable for MinGW.
> Msys is found at sourceforge.net MinGW download page.
> 
> A.
> 

I've tried MSYS many times, but I've never got it working properly
(especially bash). I recommend using Cygwin as environment, but Mingw as
compiler.

RE: [Dev-C++] Configure, make, and assorted flowers

[Andres R. <lo...@ho...>]

I reccomend to download msys package. It is more sutable for MinGW.
Msys is found at sourceforge.net MinGW download page.

A.


> -----Original Message-----
> From: dev...@li... [mailto:dev-cpp-users-
> ad...@li...] On Behalf Of Hongli Lai
> Sent: 17. juuni 2002. a. 13:24
> To: Abhijit Shylanath
> Cc: Dev-C++ Mailing List
> Subject: Re: [Dev-C++] Configure, make, and assorted flowers
> 
> Abhijit Shylanath wrote:
> 
> >Most source packages I download need me to run 'configure' before
'make'.
> >Are conigure's windows binaries available for download to run with
> >GCC-ports? Where do I get them? I'm really confused. I downloaded
bash
> >sources, assuming I can compile them (maybe with modifications),
using
> >Cygwin or MingW, and don't know what to do... any help will be
> appreciated.
> >Thanks.
> >
> >
> 
> This is what I do:
> 1. Download and install Dev-C++ 5.
> 2. Download Cygwin and install everything related to development
(bash,
> gcc, make, Cygwin's mingw environment, bison, yacc, sed, etc.)
> 3. Make Dev-C++'s Mingw the default compiler:
> export CC='C:/Dev-C++/bin/gcc'
> export CXX='C:/Dev-C++/bin/g++'
> 4. Tell configure that you're configuring for Mingw.
> ./configure --target=i586-pc-mingw32 --build=i586-pc-mingw32
> --host=i586-pc-mingw32
> make install
> 
> 
> 
> 
> _______________________________________________________________
> 
> Sponsored by:
> ThinkGeek at http://www.ThinkGeek.com/
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> https://lists.sourceforge.net/lists/listinfo/dev-cpp-users

Re: [Dev-C++] Configure, make, and assorted flowers

[Hongli L. <h....@ch...>]

Abhijit Shylanath wrote:

>Most source packages I download need me to run 'configure' before 'make'.
>Are conigure's windows binaries available for download to run with
>GCC-ports? Where do I get them? I'm really confused. I downloaded bash
>sources, assuming I can compile them (maybe with modifications), using
>Cygwin or MingW, and don't know what to do... any help will be appreciated.
>Thanks.
>  
>

This is what I do:
1. Download and install Dev-C++ 5.
2. Download Cygwin and install everything related to development (bash, 
gcc, make, Cygwin's mingw environment, bison, yacc, sed, etc.)
3. Make Dev-C++'s Mingw the default compiler:
export CC='C:/Dev-C++/bin/gcc'
export CXX='C:/Dev-C++/bin/g++'
4. Tell configure that you're configuring for Mingw.
./configure --target=i586-pc-mingw32 --build=i586-pc-mingw32 
--host=i586-pc-mingw32
make install

[Dev-C++] LoadLib

[Christian W. <Chr...@vo...>]

Hi List,


I try to learn the handling with DLLs and the Project I've wrote doesnt
work...

Has anyone some Ideas what I've made wrong ???



Kind Regards


CHW

Here the code:

#include <windows.h>
#include <TCHAR.h>
#include <stdio.h>



static HINSTANCE hLibrary ;



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

	bool bT;		

	LPCSTR test;
	
	
	typedef bool (*lpTest)(void);
	typedef LPCSTR (*lpTest2)(void);
	typedef char* (*lpTest3) (char*);


	lpTest fnTest;
	lpTest2 fnTest2;
	lpTest3 fnTest3;


	//DLL einbinden
	if ((hLibrary = LoadLibrary (TEXT("DLL.DLL"))) == NULL)
    	{
		MessageBox (NULL, TEXT ("Can't load DLL.DLL."), "hjjhkj", 0)
;
        		return -1 ;
   	 };
	
	
   	 fnTest = (lpTest) GetProcAddress(hLibrary, _T("_Test1@0"));
    	if (fnTest != NULL)
	{
		printf("juhu\n");
		bT = fnTest();
	};
	
	FreeLibrary(hLibrary);         // Unload DLL from memory



	if ((hLibrary = LoadLibrary (TEXT("DLL.DLL"))) == NULL)
    	{
		MessageBox (NULL, TEXT ("Can't load DLL.DLL."), "hjjhkj", 0)
;
        	return -1 ;
    	};
	
    	fnTest2 = (lpTest2) GetProcAddress(hLibrary, _T("Test2"));
    	if (fnTest != NULL)
	{
		printf("juhu2\n");
		test = fnTest2();
		
	};
	
	FreeLibrary(hLibrary);         // Unload DLL from memory





	if ((hLibrary = LoadLibrary (TEXT("DLL.DLL"))) == NULL)
    	{
		MessageBox (NULL, TEXT ("Can't load DLL.DLL."), "hjjhkj", 0)
;
        		return -1 ;
    	};
	
    	fnTest3 = (lpTest3) GetProcAddress(hLibrary, _T("_Test3@4"));
    	if (fnTest3 != NULL)
	{
		char szTest[400];
		*szTest = 0;
		printf("juhu3");
		strcpy (szTest, fnTest3("hallo welt\0"));
		printf("%s", szTest);

		
	};
	
	FreeLibrary(hLibrary);         // Unload DLL from memory


	getchar();

	return 0;
}



Here the DLL:

#include <windows.h>
#include <string.h>

#ifdef __cplusplus
#define EXPORT extern "C" __declspec (dllexport)
#else
#define EXPORT __declspec (dllexport)
#endif

EXPORT BOOL CALLBACK TestA();

#define TestA Test1

EXPORT LPCSTR CALLBACK TestB();

#define TestB Test2

EXPORT char* CALLBACK TestC(char*);

#define TestC Test3


BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{
    return TRUE;
}

EXPORT BOOL CALLBACK TestA(void)
{
	return TRUE;
};

EXPORT LPCSTR TestB(void)
{
	return "Test\0";
};

EXPORT char* CALLBACK TestC(char *lpcStr)
{
	MessageBox(NULL, lpcStr, "test", MB_OK);


	return lpcStr;
};

[Dev-C++] Configure, make, and assorted flowers

[Abhijit S. <mu...@gm...>]

Most source packages I download need me to run 'configure' before 'make'.
Are conigure's windows binaries available for download to run with
GCC-ports? Where do I get them? I'm really confused. I downloaded bash
sources, assuming I can compile them (maybe with modifications), using
Cygwin or MingW, and don't know what to do... any help will be appreciated.
Thanks.
--------------------------
http://mudeth.tripod.com

Re: [Dev-C++] threads issue...

[Abhijit S. <mu...@gm...>]

>       do
>       {
>         GetExitCodeThread(hThread, &exit_code);
>       } while(exit_code == STILL_ACTIVE);
>       cout << "\n Thread " << i+1 << " has completed.\n";


I almost fergot... polling GetExitCodeThread() can be very CPU intensive, so
you might want to Sleep() in between polls, as in

do
{
   GetExitCodeThread(hThread, &exit_code);
   Sleep(DELAY);
} while(exit_code == STILL_ACTIVE);

DELAY can be 100 or more or less, I dunno, depending on the need for speed.

I don't know of any synchornous method to do this.

--------------------------
http://mudeth.tripod.com

Re: [Dev-C++] threads issue...

[Abhijit S. <mu...@gm...>]

> Is there any function call like join() of java, in
> C++.

GetExitCodeThread(HANDLE, LPDWORD exit_code) tells you the exit code of the
thread. exit_code is STILL_ACTIVE if the thread is running, the actual exit
code if it has completed. For example,

#include <iostream.h>
#include <windows.h>

DWORD WINAPI ThreadProc(LPVOID );

int main()
{
  for(int i = 0;i<3;i++)
  {
    DWORD threadId;
    DWORD exit_code;
    HANDLE hThread;

    hThread = CreateThread(NULL,0,ThreadProc,&i,0,&threadId);
    if(hThread == NULL)
      cout << "\n Thread has not been created";
    else
    {
      //_getch();
      cout << "\n Thread has been created successfully.";
      
      do
      {
        GetExitCodeThread(hThread, &exit_code);
      } while(exit_code == STILL_ACTIVE);
      cout << "\n Thread " << i+1 << " has completed.\n";
    }
  }
  return 0;
}

DWORD WINAPI ThreadProc( LPVOID lpParam )
{
  cout << "\n Entered threadProc...";
  MessageBox(NULL,"sample output","",MB_OK);

  for(int i = 0;i<10;i++)
  {
    cout << "\n thread output is:"<<HIWORD(lpParam) << ".."<<i;
  }

  return 0;
}
--------------------------
http://mudeth.tripod.com

Re: [Dev-C++] threads issue...

[Raghunath Marella.S <ms...@ya...>]

Thanks Abhijit. 

Is there any function call like join() of java, in
C++.

regards,
Raghunath

--- Abhijit Shylanath <mu...@gm...> wrote:
> You're not giving enough time for the threads to
> start. As soon as you
> create them, the main() process ends, so the threads
> are destroyed. Put a
> delay, either using a Sleep() or MessageBox()
> function, as show below. Try
> clicking the OK button in the 'waiting' message-box
> to see what happens to
> the threads, they're stopped without being
> completed. The new code is here:
> 
> #include <iostream.h>
> #include <stdlib.h>
> #include <windows.h>
> #include <conio_mingw.h>
> 
> DWORD WINAPI ThreadProc(LPVOID );
> 
> int main()
> {
>   for(int i = 0;i<3;i++)
>   {
>     DWORD threadId;
>     HANDLE hThread;
> 
>     hThread =
> CreateThread(NULL,0,ThreadProc,&i,0,&threadId);
>     if(hThread == NULL)
>       cout << "\n Thread has not been created";
>     else
>     {
>       //_getch();
>       cout << "\n Thread has been created
> successfully.";
>     }
>   }
>   MessageBox(NULL, "Click to close.", "Waiting",
> MB_OK);
>   return 0;
> }
> 
> DWORD WINAPI ThreadProc( LPVOID lpParam )
> {
>   cout << "\n Entered threadProc...";
>   MessageBox(NULL,"sample output","",MB_OK);
> 
>   for(int i = 0;i<10;i++)
>   {
>     cout << "\n thread output is:"<<HIWORD(lpParam)
> << ".."<<i;
>   }
> 
>   return 0;
> }
> 
> PS: Note that using void main() is WRONG!!! It
> should be int main(), and int
> only. It may run on some platforms, but it won't run
> on all. Also, in MingW,
> you have to use conio_mingw.h, but this is very
> platform and compiler
> specific.
> 
> 
>
_______________________________________________________________
> 
> Sponsored by:
> ThinkGeek at http://www.ThinkGeek.com/
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
>
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Re: [Dev-C++] threads issue...

[Abhijit S. <mu...@gm...>]

You're not giving enough time for the threads to start. As soon as you
create them, the main() process ends, so the threads are destroyed. Put a
delay, either using a Sleep() or MessageBox() function, as show below. Try
clicking the OK button in the 'waiting' message-box to see what happens to
the threads, they're stopped without being completed. The new code is here:

#include <iostream.h>
#include <stdlib.h>
#include <windows.h>
#include <conio_mingw.h>

DWORD WINAPI ThreadProc(LPVOID );

int main()
{
  for(int i = 0;i<3;i++)
  {
    DWORD threadId;
    HANDLE hThread;

    hThread = CreateThread(NULL,0,ThreadProc,&i,0,&threadId);
    if(hThread == NULL)
      cout << "\n Thread has not been created";
    else
    {
      //_getch();
      cout << "\n Thread has been created successfully.";
    }
  }
  MessageBox(NULL, "Click to close.", "Waiting", MB_OK);
  return 0;
}

DWORD WINAPI ThreadProc( LPVOID lpParam )
{
  cout << "\n Entered threadProc...";
  MessageBox(NULL,"sample output","",MB_OK);

  for(int i = 0;i<10;i++)
  {
    cout << "\n thread output is:"<<HIWORD(lpParam) << ".."<<i;
  }

  return 0;
}

PS: Note that using void main() is WRONG!!! It should be int main(), and int
only. It may run on some platforms, but it won't run on all. Also, in MingW,
you have to use conio_mingw.h, but this is very platform and compiler
specific.

RE: [Dev-C++] weird result

[Ramana K. <ra...@my...>]

Well, that is very weird indeed. I have played around a bit with your code
and have found a solution, but a better explaination would be welcome. I
tried
    cout << 2147483648;
and the complier gave me a warning that the integer was so large it would
have to be unsigned. so i decided to make the result of the Power(int,int)
function unsigned.
Thus:
instead of
    cout << "Power(" << a << "," << n+1 << ")= " << Power(a,n+1) << endl;"
you have this:
    cout << "Power(" << a << "," << n+1 << ")= " << (unsigned) Power(a,n+1)
<< endl;
and it works fine.
  -----Original Message-----
  From: dev...@li...
[mailto:dev...@li...]On Behalf Of Jose Gana
  Sent: Sunday, 16 June 2002 1:30 AM
  To: dev...@li...
  Subject: [Dev-C++] weird result


  Hi!
  Sorry if it is too obvious!
   I am new in C++. I got 2^30= Power(2,30)= - 2147483648 in stead of +
2147483648 in my program.

  I must have done something wrong. But I can figure it out. Can somebody
help me out?



  #include <iostream>

  #include <cstdlib>



  using namespace std;



  int Power(int a, int n);



  int main()

  {

   int a=2, n=30;           //int limit == 4294967295;

                                    // Power(2,30)==1073741824

                                    // Power(2,31)==2147483648

                                    // Power(2,32)==4294967296 out of limit
=> Power(2,32)==0



   cout << "Power(" << a << "," << n << ")= " << Power(a,n) << endl;

   cout << "Power(" << a << "," << n+1 << ")= " << Power(a,n+1) << endl;



   system("PAUSE");

   return 0;

  }



  int Power(int a, int n)

  {

   int i=1, r=1;

   for (i=1;i<=n;i++)

   {

   r=r*a;

   }

   return r;

  }



  I am using Dev-C++ version 4.01. in windows XP

  Thank you for your help to this matter.



  Jose Gana

  Santiago, Chile.



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