std_iostream.h revision 296373
1// Standard iostream objects -*- C++ -*- 2 3// Copyright (C) 1997, 1998, 1999, 2001, 2002, 2005 4// Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 2, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING. If not, write to the Free 19// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 20// USA. 21 22// As a special exception, you may use this file as part of a free software 23// library without restriction. Specifically, if other files instantiate 24// templates or use macros or inline functions from this file, or you compile 25// this file and link it with other files to produce an executable, this 26// file does not by itself cause the resulting executable to be covered by 27// the GNU General Public License. This exception does not however 28// invalidate any other reasons why the executable file might be covered by 29// the GNU General Public License. 30 31/** @file iostream 32 * This is a Standard C++ Library header. 33 */ 34 35// 36// ISO C++ 14882: 27.3 Standard iostream objects 37// 38 39#ifndef _GLIBCXX_IOSTREAM 40#define _GLIBCXX_IOSTREAM 1 41 42#pragma GCC system_header 43 44#include <bits/c++config.h> 45#include <ostream> 46#include <istream> 47 48_GLIBCXX_BEGIN_NAMESPACE(std) 49 50 /** 51 * @name Standard Stream Objects 52 * 53 * The <iostream> header declares the eight <em>standard stream 54 * objects</em>. For other declarations, see 55 * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#10 and the 56 * @link s27_2_iosfwd I/O forward declarations @endlink 57 * 58 * They are required by default to cooperate with the global C library's 59 * @c FILE streams, and to be available during program startup and 60 * termination. For more information, see the HOWTO linked to above. 61 */ 62 //@{ 63 extern istream cin; ///< Linked to standard input 64 extern ostream cout; ///< Linked to standard output 65 extern ostream cerr; ///< Linked to standard error (unbuffered) 66 extern ostream clog; ///< Linked to standard error (buffered) 67 68#ifdef _GLIBCXX_USE_WCHAR_T 69 extern wistream wcin; ///< Linked to standard input 70 extern wostream wcout; ///< Linked to standard output 71 extern wostream wcerr; ///< Linked to standard error (unbuffered) 72 extern wostream wclog; ///< Linked to standard error (buffered) 73#endif 74 //@} 75 76 // For construction of filebuffers for cout, cin, cerr, clog et. al. 77 static ios_base::Init __ioinit; 78 79_GLIBCXX_END_NAMESPACE 80 81#endif /* _GLIBCXX_IOSTREAM */ 82