protected: virtual pos_type seekoff(off_type off,

protected: virtual int_type underflow();

void setstate( iostate state );

Defined in header

fmtflags flags() const; (1)

pos_type tellp();

CharT fill() const; (1)

void swap( basic_ostringstream& other );

std::basic_string<CharT,Traits,Allocator> str() const; (1)

Defined in header