header

<iosfwd>

Input-Output forward declarations
This header provides forward declarations for the types of the standard input/output library.

Note that the file does not contain the template definitions, and thus shall only be included in other headers to provide forward declarations of these types.

<iosfwd>

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namespace std {
 template<class charT> struct char_traits;
 template<> class char_traits<char>;
 template<> class char_traits<wchar_t>;
 template<class T> class allocator;
 template <class charT, class traits=char_traits<charT> > class basic_ios;
 template <class charT, class traits=char_traits<charT> > class basic_streambuf;
 template <class charT, class traits=char_traits<charT> > class basic_istream;
 template <class charT, class traits=char_traits<charT> > class basic_ostream;
 template <class charT, class traits=char_traits<charT> > class basic_iostream;
 
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_stringbuf;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> > 
 class basic_istringstream;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_ostringstream;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_stringstream;
 template <class charT, class traits=char_traits<charT> > class basic_filebuf;
 template <class charT, class traits=char_traits<charT> > class basic_ifstream;
 template <class charT, class traits=char_traits<charT> > class basic_ofstream;
 template <class charT, class traits=char_traits<charT> > class basic_fstream;
 template <class charT, class traits=char_traits<charT> > class istreambuf_iterator;
 template <class charT, class traits=char_traits<charT> > class ostreambuf_iterator;
 template<class stateT> class fpos;
 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;
 typedef fpos<mbstate_t> streampos;
 typedef fpos<mbstate_t> wstreampos;
}
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namespace std {
 template<class charT> struct char_traits;
 template<> class char_traits<char>;
 template<> class char_traits<char16_t>;
 template<> class char_traits<char32_t>;
 template<> class char_traits<wchar_t>;
 template<class T> class allocator;
 template <class charT, class traits=char_traits<charT> > class basic_ios;
 template <class charT, class traits=char_traits<charT> > class basic_streambuf;
 template <class charT, class traits=char_traits<charT> > class basic_istream;
 template <class charT, class traits=char_traits<charT> > class basic_ostream;
 template <class charT, class traits=char_traits<charT> > class basic_iostream;
 
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_stringbuf;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> > 
 class basic_istringstream;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_ostringstream;
 template <class charT, class traits=char_traits<charT>, class Alloc=allocator<charT> >
 class basic_stringstream;
 template <class charT, class traits=char_traits<charT> > class basic_filebuf;
 template <class charT, class traits=char_traits<charT> > class basic_ifstream;
 template <class charT, class traits=char_traits<charT> > class basic_ofstream;
 template <class charT, class traits=char_traits<charT> > class basic_fstream;
 template <class charT, class traits=char_traits<charT> > class istreambuf_iterator;
 template <class charT, class traits=char_traits<charT> > class ostreambuf_iterator;
 template<class stateT> class fpos;
 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;
 typedef fpos<mbstate_t> streampos;
 typedef fpos<mbstate_t> wstreampos;
}

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