From: "Alex Vinokur" <alexvn AT bigfoot DOT com>
Newsgroups: alt.comp.lang.learn.c-c++,comp.lang.c++,comp.os.msdos.djgpp
Subject: Re: char[] & non-Latin letters
Date: Tue, 27 Aug 2002 23:57:25 +0200
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
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"Ron Natalie" <ron AT sensor DOT com> wrote in message news:j5Ra9.2587$gw DOT 28 AT atlpnn01 DOT usenetserver DOT com...
>
> "Alex Vinokur" <alexvn AT bigfoot DOT com> wrote in message
> news:akgl7a$1i2cm0$1 AT ID-79865 DOT news DOT dfncis DOT de...
>
> >   cout << wc_value << endl;
>
> You have to use a wide stream
>     wcout << wc_value << endl;
>
>
>
>

===============
Windows 2000
DJGPP 2.03
gcc/gpp version 3.1
===============


========= C++ code : BEGIN =========
// File ttt.cpp

#include <wchar.h>
#include <iostream>
using namespace std;

int main ()
{
#define TEST_VALUE 65

char c_value = TEST_VALUE;
wchar_t wc_value = TEST_VALUE;

  cout << c_value << endl;
  wcout << wc_value << endl;

  return 0;
}


========= C++ code : END ===========


========= iostream : BEGIN =========

[---omitted---]

#ifndef _CPP_IOSTREAM
#define _CPP_IOSTREAM 1

#pragma GCC system_header

#include <bits/c++config.h>
#include <ostream>
#include <istream>

namespace std
{
  extern istream cin;
  extern ostream cout;
  extern ostream cerr;
  extern ostream clog;
#ifdef _GLIBCPP_USE_WCHAR_T
  extern wistream wcin;
  extern wostream wcout;
  extern wostream wcerr;
  extern wostream wclog;
#endif

  // For construction of filebuffers for cout, cin, cerr, clog et. al.
  static ios_base::Init __ioinit;
} // namespace std

#endif

========= iostream : END ===========



========= iostream.h : BEGIN =========

[---omitted---]


#ifndef _CPP_BACKWARD_IOSTREAM_H
#define _CPP_BACKWARD_IOSTREAM_H 1

#include "backward_warning.h"
#include <iostream>

using std::iostream;
using std::ostream;
using std::istream;
using std::ios;
using std::streambuf;

using std::cout;
using std::cin;
using std::cerr;
using std::clog;
#ifdef _GLIBCPP_USE_WCHAR_T
using std::wcout;
using std::wcin;
using std::wcerr;
using std::wclog;
#endif

using std::ws;
using std::endl;
using std::ends;
using std::flush;

#endif

// Local Variables:
// mode:C++
// End:

========= iostream.h : END ===========



========= Compilation : BEGIN =========

%gpp -v ttt.cpp

Reading specs from c:/djgpp/lib/gcc-lib/djgpp/3.1/specs
Configured with: ../configure i586-pc-msdosdjgpp --prefix=/dev/env/DJDIR --disab
le-nls
Thread model: single
gcc version 3.1
 c:/djgpp/lib/gcc-lib/djgpp/3.1/cc1plus.exe -v -D__GNUC__=3 -D__GNUC_MINOR__=1 -
D__GNUC_PATCHLEVEL__=0 -D__MSDOS__ -D__GO32__ -D__DJGPP__=2 -D__unix__ -D__MSDOS
__ -D__GO32__ -D__DJGPP__=2 -D__unix__ -Asystem=msdos -Asystem=unix -D__NO_INLIN
E__ -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D_
_tune_i586__ -D__tune_pentium__ -DMSDOS -DGO32 -DDJGPP=2 -Dunix -remap -imacros
c:/djgpp/lib/gcc-lib/djgpp/3.1/djgpp.ver ttt.cpp -D__GNUG__=3 -D__DEPRECATED -D_
_EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase ttt.cpp -version -o c:/djgp
p/tmp/ccRB2uV1.s
GNU CPP version 3.1 (cpplib) (80386, BSD syntax)
GNU C++ version 3.1 (djgpp)
 compiled by GNU C version 3.1.
ignoring nonexistent directory "c:/djgpp/djgpp/include"
#include "..." search starts here:
#include <...> search starts here:
 c:/djgpp/lang/cxx-v31
 c:/djgpp/lang/cxx-v31/djgpp
 c:/djgpp/lang/cxx-v31/backward
 c:/djgpp/lib/gcc-lib/djgpp/3.1/include
 c:/djgpp/include
End of search list.
ttt.cpp: In function `int main()':
ttt.cpp:13: `wcout' undeclared (first use this function)
ttt.cpp:13: (Each undeclared identifier is reported only once for each function
   it appears in.)


========= Compilation : END ===========


So, we can see that `wcout' undeclared because _GLIBCPP_USE_WCHAR_T undefined.

What is way out ?

   ==================
   Alex Vinokur
     mailto:alexvn AT go DOT to
     http://up.to/alexvn
   ==================