#ifndef _CPP_IOSFWD
#define _CPP_IOSFWD 1
#pragma GCC system_header
#include <bits/c++config.h>
#include <bits/stringfwd.h> // For string forward declarations.
#include <bits/fpos.h>
#include <bits/functexcept.h>
namespace std
{
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_ios;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_streambuf;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_istream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_ostream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_iostream;
template<typename _CharT, typename _Traits = char_traits<_CharT>,
typename _Alloc = allocator<_CharT> >
class basic_stringbuf;
template<typename _CharT, typename _Traits = char_traits<_CharT>,
typename _Alloc = allocator<_CharT> >
class basic_istringstream;
template<typename _CharT, typename _Traits = char_traits<_CharT>,
typename _Alloc = allocator<_CharT> >
class basic_ostringstream;
template<typename _CharT, typename _Traits = char_traits<_CharT>,
typename _Alloc = allocator<_CharT> >
class basic_stringstream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_filebuf;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_ifstream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_ofstream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_fstream;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class istreambuf_iterator;
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class ostreambuf_iterator;
#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
class ios_base;
#endif
typedef basic_ios<char> ios;
typedef basic_streambuf<char> streambuf;
typedef basic_istream<char> istream;
typedef basic_ostream<char> ostream;
typedef basic_iostream<char> iostream;
typedef basic_stringbuf<char> stringbuf;
typedef basic_istringstream<char> istringstream;
typedef basic_ostringstream<char> ostringstream;
typedef basic_stringstream<char> stringstream;
typedef basic_filebuf<char> filebuf;
typedef basic_ifstream<char> ifstream;
typedef basic_ofstream<char> ofstream;
typedef basic_fstream<char> fstream;
typedef basic_ios<wchar_t> wios;
typedef basic_streambuf<wchar_t> wstreambuf;
typedef basic_istream<wchar_t> wistream;
typedef basic_ostream<wchar_t> wostream;
typedef basic_iostream<wchar_t> wiostream;
typedef basic_stringbuf<wchar_t> wstringbuf;
typedef basic_istringstream<wchar_t> wistringstream;
typedef basic_ostringstream<wchar_t> wostringstream;
typedef basic_stringstream<wchar_t> wstringstream;
typedef basic_filebuf<wchar_t> wfilebuf;
typedef basic_ifstream<wchar_t> wifstream;
typedef basic_ofstream<wchar_t> wofstream;
typedef basic_fstream<wchar_t> wfstream;
}
#endif