examples/manual/wostream.cpp

/***************************************************************************
 *
 * ostream2.cpp - ostream example
 *
 * $Id: //stdlib/dev/examples/stdlib/manual/wostream.cpp#2 $
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-2005 Quovadx,  Inc., acting through its  Rogue Wave
 * Software division. Licensed under the Apache License, Version 2.0 (the
 * "License");  you may  not use this file except  in compliance with the
 * License.    You    may   obtain   a   copy   of    the   License    at
 * http://www.apache.org/licenses/LICENSE-2.0.    Unless   required    by
 * applicable law  or agreed to  in writing,  software  distributed under
 * the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR
 * CONDITIONS OF  ANY KIND, either  express or implied.  See  the License
 * for the specific language governing permissions  and limitations under
 * the License.
 * 
 **************************************************************************/
 
#include <iostream>   // for wcout, wostream, endl
#include <sstream>    // for wistringstream

#include <examples.h>


int main ()
{
    const double f = 3.1415926;

    const wchar_t s[] = { 'K', 'e', 'n', 'a', 'v', 'o', ' ', '!', '\0' };

    // create a read/write stringbuf object on wide char
    // and attach it to an wistringstream object
    std::wistringstream in (std::wios::in | std::wios::out);
      
    // tie the wostream object to the wistringstream object
    std::wostream out (in.rdbuf ());

    out << L"test beginning !" << std::endl;
    out.setf (std::wios::fixed, std::wios::floatfield);

    // output f in fixed format
    out << f << std::endl; 

    // store the current put-pointer position  
    std::wostream::pos_type pos = out.tellp ();

    // output s 
    out << s << std::endl;

    // output the all buffer to standard output
    std::wcout << in.rdbuf () << std::endl;

    // position the get-pointer
    in.seekg (pos);

    // output s
    std::wcout << in.rdbuf () << std::endl;         

    return 0;
}