C++

Reference

<ios> <iostream>

std::manipulators

Stream manipulators
Manipulators are functions specifically designed to be used in conjunction with the insertion (<<) and extraction (>>) operators on stream objects, for example:
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cout << boolalpha;

They are still regular functions and can also be called as any other function using a stream object as argument, for example:
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boolalpha (cout);

Manipulators are used to change formatting parameters on streams and to insert or extract certain special characters.

Basic format flags

These manipulators are usable on both input and output streams, although many only have an effect when applied to either output or input streams.

Independent flags (switch on):
boolalpha
Alphanumerical bool values (function)
showbase
Show numerical base prefixes (function)
showpoint
Show decimal point (function)
showpos
Show positive signs (function)
skipws
Skip whitespaces (function)
unitbuf
Flush buffer after insertions (function)
uppercase
Generate upper-case letters (function)
Independent flags (switch off):
noboolalpha
No alphanumerical bool values (function)
noshowbase
Do not show numerical base prefixes (function)
noshowpoint
Do not show decimal point (function)
noshowpos
Do not show positive signs (function)
noskipws
Do not skip whitespaces (function)
nounitbuf
Do not force flushes after insertions (function)
nouppercase
Do not generate upper case letters (function)
Numerical base format flags ("basefield" flags):
dec
Use decimal base (function)
hex
Use hexadecimal base (function)
oct
Use octal base (function)
Floating-point format flags ("floatfield" flags):
fixed
Use fixed floating-point notation (function)
scientific
Use scientific floating-point notation (function)
Adustment format flags ("adjustfield" flags):
internal
Adjust field by inserting characters at an internal position (function)
left
Adjust output to the left (function)
right
Adjust output to the right (function)

Input manipulators

ws
Extract whitespaces (function)

Output manipulators

endl
Insert newline and flush (function)
ends
Insert null character (function)
flush
Flush stream buffer (function)

Parameterized manipulators

These functions take parameters when used as manipulators. They require the explicit inclusion of the header file <iomanip>.

setiosflags
Set format flags (function)
resetiosflags
Reset format flags (function)
setbase
Set basefield flag (function)
setfill
Set fill character (function)
setprecision
Set decimal precision (function)
setw
Set field width (function)