27 Input/output library [input.output]

27.5 Iostreams base classes [iostreams.base]

27.5.6 ios_base manipulators [std.ios.manip] basefield manipulators [basefield.manip]

ios_base& dec(ios_base& str);

Effects: Calls str.setf(ios_base::dec, ios_base::basefield).

Returns: str305.

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.