iostream如何被qing_dao_boy正确打开

如果你看了这个文章，你才能直接编译以后我的博客的文件
接下来，是iostream在2020/1/29的改法，你应该将你的iostream一样改一下

// Standard iostream objects -*- C++ -*-
// Copyright (C) 1997-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.
This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.
If not, see
// <http://www.gnu.org/licenses/>.
/** @file include/iostream
*
This is a Standard C++ Library header.
*/
//
// ISO C++ 14882: 27.3
Standard iostream objects
//
#ifndef _GLIBCXX_IOSTREAM
#define _GLIBCXX_IOSTREAM 1
#pragma GCC system_header
#include <bits/c++config.h>
#include <ostream>
#include <conio.h>
#include <cstdio>
#include <cstring>
#include <windows.h>
#include <cstdlib>
#include <time.h>
#include <istream>
#include <fstream>
#include <sstream>
#include <iomanip>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
*
@name Standard Stream Objects
*
*
The &lt;iostream&gt; header declares the eight <em>standard stream
*
objects</em>.
For other declarations, see
*
http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch24.html
*
and the @link iosfwd I/O forward declarations @endlink
*
*
They are required by default to cooperate with the global C
*
library's @c FILE streams, and to be available during program
*
startup and termination. For more information, see the HOWTO
*
linked to above.
*/
//@{
extern istream cin;
/// Linked to standard input
extern ostream cout;
/// Linked to standard output
extern ostream cerr;
/// Linked to standard error (unbuffered)
extern ostream clog;
/// Linked to standard error (buffered)
#ifdef _GLIBCXX_USE_WCHAR_T
extern wistream wcin;
/// Linked to standard input
extern wostream wcout;	/// Linked to standard output
extern wostream wcerr;	/// Linked to standard error (unbuffered)
extern wostream wclog;	/// Linked to standard error (buffered)
#endif
//@}
// For construction of filebuffers for cout, cin, cerr, clog et. al.
static ios_base::Init __ioinit;
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif /* _GLIBCXX_IOSTREAM */

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