Editing C++ Standard Library (section)

===Streams, files, and input/output===
Components that C++ programs may use for input/output manipulation and file manipulation.
{| class="wikitable"
! Name !! Description 
|-
| {{code|<filesystem>}}
|| Added in [[C++17]]. Provides facilities for [[file system]] operations and their components.
|-
| {{code|<fstream>}}
|| Provides facilities for file-based input and output. See [[fstream]].
|-
| {{code|<iomanip>}}
|| Provides facilities to manipulate output formatting, such as the [[Radix|base]] used when formatting integers and the [[arithmetic precision|precision]] of [[floating-point arithmetic|floating-point]] values.
|-
| {{code|<ios>}}
|| Provides several types and functions basic to the operation of iostreams.
|-
| {{code|<iosfwd>}}
|| Provides [[forward declaration]]s of several I/O-related class templates.
|-
| {{code|<iostream>}}
|| Provides C++ input and output fundamentals. See [[iostream]].
|-
| {{code|<istream>}}
|| Provides <code>std::istream</code> and other supporting classes for input.
|-
| {{code|<ostream>}}
|| Provides <code>std::ostream</code> and other supporting classes for output.
|-
| {{code|<print>}}
|| Added in [[C++23]]. Provides formatted output utilities such as <code>std::print</code> supported for both C and C++ streams.
|-
| {{code|<spanstream>}}
|| Added in [[C++23]]. Provides <code>std::spanstream</code> and other fixed character buffer I/O streams.
|-
| {{code|<sstream>}}
|| Provides <code>std::stringstream</code> and other supporting classes for string manipulation.
|-
| {{code|<streambuf>}}
|| Provides reading and writing functionality to/from certain types of character sequences, such as external files or strings.
|-
| style="background:#F99" | {{code|<strstream>}}
| style="background:#F99" | Provides input/output operations on array-backed streams. Deprecated in [[C++98]], removed in [[C++26]].
|-
| {{code|<syncstream>}}
|| Added in [[C++20]]. Provides <code>std::osyncstream</code> and other supporting classes for synchronized output streams.
|}