27 Input/output library [input.output]

27.5 Iostreams base classes [iostreams.base]

27.5.6 ios_­base manipulators [std.ios.manip]

27.5.6.1 fmtflags manipulators [fmtflags.manip]

Each function specified in this subclause is a designated addressable function ([namespace.std]).
ios_base& boolalpha(ios_base& str);
Effects: Calls str.setf(ios_­base::boolalpha).
Returns: str.
ios_base& noboolalpha(ios_base& str);
Effects: Calls str.unsetf(ios_­base::boolalpha).
Returns: str.
ios_base& showbase(ios_base& str);
Effects: Calls str.setf(ios_­base::showbase).
Returns: str.
ios_base& noshowbase(ios_base& str);
Effects: Calls str.unsetf(ios_­base::showbase).
Returns: str.
ios_base& showpoint(ios_base& str);
Effects: Calls str.setf(ios_­base::showpoint).
Returns: str.
ios_base& noshowpoint(ios_base& str);
Effects: Calls str.unsetf(ios_­base::showpoint).
Returns: str.
ios_base& showpos(ios_base& str);
Effects: Calls str.setf(ios_­base::showpos).
Returns: str.
ios_base& noshowpos(ios_base& str);
Effects: Calls str.unsetf(ios_­base::showpos).
Returns: str.
ios_base& skipws(ios_base& str);
Effects: Calls str.setf(ios_­base::skipws).
Returns: str.
ios_base& noskipws(ios_base& str);
Effects: Calls str.unsetf(ios_­base::skipws).
Returns: str.
ios_base& uppercase(ios_base& str);
Effects: Calls str.setf(ios_­base::uppercase).
Returns: str.
ios_base& nouppercase(ios_base& str);
Effects: Calls str.unsetf(ios_­base::uppercase).
Returns: str.
ios_base& unitbuf(ios_base& str);
Effects: Calls str.setf(ios_­base::unitbuf).
Returns: str.
ios_base& nounitbuf(ios_base& str);
Effects: Calls str.unsetf(ios_­base::unitbuf).
Returns: str.

27.5.6.2 adjustfield manipulators [adjustfield.manip]

Each function specified in this subclause is a designated addressable function ([namespace.std]).
ios_base& internal(ios_base& str);
Effects: Calls str.setf(ios_­base::internal, ios_­base::adjustfield).
Returns: str.
ios_base& left(ios_base& str);
Effects: Calls str.setf(ios_­base::left, ios_­base::adjustfield).
Returns: str.
ios_base& right(ios_base& str);
Effects: Calls str.setf(ios_­base::right, ios_­base::adjustfield).
Returns: str.

27.5.6.3 basefield manipulators [basefield.manip]

Each function specified in this subclause is a designated addressable function ([namespace.std]).
ios_base& dec(ios_base& str);
Effects: Calls str.setf(ios_­base::dec, ios_­base::basefield).
Returns: str299.
ios_base& hex(ios_base& str);
Effects: Calls str.setf(ios_­base::hex, ios_­base::basefield).
Returns: str.
ios_base& oct(ios_base& str);
Effects: Calls str.setf(ios_­base::oct, ios_­base::basefield).
Returns: str.
The function signature dec(ios_­base&) can be called by the function signature basic_­ostream& stream::operator<<(ios_­base& (*)(ios_­base&)) to permit expressions of the form cout << dec to change the format flags stored in cout.

27.5.6.4 floatfield manipulators [floatfield.manip]

Each function specified in this subclause is a designated addressable function ([namespace.std]).
ios_base& fixed(ios_base& str);
Effects: Calls str.setf(ios_­base::fixed, ios_­base::floatfield).
Returns: str.
ios_base& scientific(ios_base& str);
Effects: Calls str.setf(ios_­base::scientific, ios_­base::floatfield).
Returns: str.
ios_base& hexfloat(ios_base& str);
Effects: Calls str.setf(ios_­base::fixed | ios_­base::scientific, ios_­base::floatfield).
Returns: str.
[Note
:
The more obvious use of ios_­base::hex to specify hexadecimal floating-point format would change the meaning of existing well-defined programs.
C++ 2003 gives no meaning to the combination of fixed and scientific.
end note
]
ios_base& defaultfloat(ios_base& str);
Effects: Calls str.unsetf(ios_­base::floatfield).
Returns: str.