namespace std {
template <class charT, class traits=char_traits<charT> >
class basic_fstream
: public basic_iostream<charT,traits> {
public:
typedef charT char_type;
typedef typename traits::int_type int_type;
typedef typename traits::pos_type pos_type;
typedef typename traits::off_type off_type;
typedef traits traits_type;
basic_fstream();
explicit basic_fstream(const char* s,
ios_base::openmode mode = ios_base::in|ios_base::out);
explicit basic_fstream(const string& s,
ios_base::openmode mode = ios_base::in|ios_base::out);
basic_fstream(const basic_fstream& rhs) = delete;
basic_fstream(basic_fstream&& rhs);
basic_fstream& operator=(const basic_fstream& rhs) = delete;
basic_fstream& operator=(basic_fstream&& rhs);
void swap(basic_fstream& rhs);
basic_filebuf<charT,traits>* rdbuf() const;
bool is_open() const;
void open(const char* s,
ios_base::openmode mode = ios_base::in|ios_base::out);
void open(const string& s,
ios_base::openmode mode = ios_base::in|ios_base::out);
void close();
private:
basic_filebuf<charT,traits> sb; };
template <class charT, class traits>
void swap(basic_fstream<charT, traits>& x,
basic_fstream<charT, traits>& y);
}
The
class template
basic_fstream<charT,traits>
supports reading and writing from named files.
It uses a
basic_filebuf<charT,traits>
object to control the associated sequences.
For the sake of exposition, the maintained data is presented here as: