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C++
Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros
(C++20)
Language support library
Concepts library
(C++20)
Diagnostics library
Memory management library
Metaprogramming library
(C++11)
General utilities library
Containers library
Iterators library
Ranges library
(C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library
(C++17)
Concurrency support library
(C++11)
Execution control library
(C++26)
Technical specifications
Symbols index
External libraries
[edit]
Input/output library
I/O manipulators
Print functions
(C++23)
C-style I/O
Buffers
basic_streambuf
basic_filebuf
basic_stringbuf
basic_spanbuf
(C++23)
strstreambuf
(
C++98/26*
)
basic_syncbuf
(C++20)
Streams
Abstractions
ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I/O
basic_ifstream
basic_ofstream
basic_fstream
String I/O
basic_istringstream
basic_ostringstream
basic_stringstream
Array I/O
basic_ispanstream
(C++23)
basic_ospanstream
(C++23)
basic_spanstream
(C++23)
istrstream
(
C++98/26*
)
ostrstream
(
C++98/26*
)
strstream
(
C++98/26*
)
Synchronized Output
basic_osyncstream
(C++20)
Types
streamoff
streamsize
fpos
Error category interface
iostream_category
(C++11)
io_errc
(C++11)
[edit]
Input/output manipulators
Floating-point formatting
showpoint
noshowpoint
setprecision
fixed
scientific
hexfloat
defaultfloat
(C++11)
(C++11)
Integer formatting
setbase
showbase
noshowbase
dec
hex
oct
Boolean formatting
boolalpha
noboolalpha
Field width and fill control
setfill
setw
internal
left
right
Other formatting
showpos
noshowpos
uppercase
nouppercase
Whitespace processing
ws
ends
skipws
noskipws
Output flushing
flush
endl