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cpp
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c
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]
C-style I/O
Types and objects
FILE
fpos_t
stdin
stdout
stderr
Functions
File access
fopen
freopen
fclose
fflush
fwide
setbuf
setvbuf
Direct input/output
fread
fwrite
Unformatted input/output
fgetc
getc
fgets
fputc
putc
fputs
getchar
gets
(until C++14)
putchar
puts
ungetc
fgetwc
getwc
fgetws
fputwc
putwc
fputws
getwchar
putwchar