libstdc++
iostream
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1 // Standard iostream objects -*- C++ -*-
2 
3 // Copyright (C) 1997-2017 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 
42 namespace 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 */
wostream wcerr
Linked to standard output.
ostream cerr
Linked to standard output.
ISO C++ entities toplevel namespace is std.
basic_istream< char > istream
Base class for char input streams.
Definition: iosfwd:138
basic_istream< wchar_t > wistream
Base class for wchar_t input streams.
Definition: iosfwd:178
wostream wclog
Linked to standard error (unbuffered)
static ios_base::Init __ioinit
Linked to standard error (buffered)
Definition: iostream:74
ostream cout
Linked to standard input.
wistream wcin
Linked to standard error (buffered)
ostream clog
Linked to standard error (unbuffered)
basic_ostream< char > ostream
Base class for char output streams.
Definition: iosfwd:141
basic_ostream< wchar_t > wostream
Base class for wchar_t output streams.
Definition: iosfwd:181
wostream wcout
Linked to standard input.
istream cin
Linked to standard input.