1// Standard iostream objects -*- C++ -*-
2
3// Copyright (C) 1997-2019 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file include/iostream
26 * This is a Standard C++ Library header.
27 */
28
29//
30// ISO C++ 14882: 27.3 Standard iostream objects
31//
32
33#ifndef _GLIBCXX_IOSTREAM
34#define _GLIBCXX_IOSTREAM 1
35
36#pragma GCC system_header
37
38#include <bits/c++config.h>
39#include <ostream>
40#include <istream>
41
42namespace std _GLIBCXX_VISIBILITY(default)
43{
44_GLIBCXX_BEGIN_NAMESPACE_VERSION
45
46 /**
47 * @name Standard Stream Objects
48 *
49 * The &lt;iostream&gt; header declares the eight <em>standard stream
50 * objects</em>. For other declarations, see
51 * http://gcc.gnu.org/onlinedocs/libstdc++/manual/io.html
52 * and the @link iosfwd I/O forward declarations @endlink
53 *
54 * They are required by default to cooperate with the global C
55 * library's @c FILE streams, and to be available during program
56 * startup and termination. For more information, see the section of the
57 * manual linked to above.
58 */
59 //@{
60 extern istream cin; /// Linked to standard input
61 extern ostream cout; /// Linked to standard output
62 extern ostream cerr; /// Linked to standard error (unbuffered)
63 extern ostream clog; /// Linked to standard error (buffered)
64
65#ifdef _GLIBCXX_USE_WCHAR_T
66 extern wistream wcin; /// Linked to standard input
67 extern wostream wcout; /// Linked to standard output
68 extern wostream wcerr; /// Linked to standard error (unbuffered)
69 extern wostream wclog; /// Linked to standard error (buffered)
70#endif
71 //@}
72
73 // For construction of filebuffers for cout, cin, cerr, clog et. al.
74 static ios_base::Init __ioinit;
75
76_GLIBCXX_END_NAMESPACE_VERSION
77} // namespace
78
79#endif /* _GLIBCXX_IOSTREAM */
80