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Standard library header <version> (C++20)

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<cpp‎ |header

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Feature test macros(C++20)
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Concepts library(C++20)
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General utilities library
Containers library
Iterators library
Ranges library(C++20)
Algorithms library
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Date and time library
Input/output library
Filesystem library(C++17)
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Standard library headers

Language support
`<cfloat>`
`<climits>`
`<compare>`(C++20)
`<contracts>`(C++26)
`<coroutine>`(C++20)
`<csetjmp>`
`<csignal>`
`<cstdarg>`
`<cstddef>`
`<cstdint>`(C++11)
`<cstdlib>`
`<exception>`
`<initializer_list>`(C++11)
`<limits>`
`<new>`
`<source_location>`(C++20)
`<stdfloat>`(C++23)
`<typeinfo>`
`<version>`(C++20)
Concepts
`<concepts>`(C++20)
Diagnostics
`<cassert>`
`<cerrno>`
`<debugging>`(C++26)
`<stacktrace>`(C++23)
`<stdexcept>`
`<system_error>`(C++11)
Memory management
`<memory>`
`<memory_resource>`(C++17)
`<scoped_allocator>`(C++11)
Metaprogramming
`<type_traits>`(C++11)
`<ratio>`(C++11)

General utilities
`<any>`(C++17)
`<bitset>`
`<bit>`(C++20)
`<charconv>`(C++17)
`<expected>`(C++23)
`<format>`(C++20)
`<functional>`
`<optional>`(C++17)
`<stdbit.h>`(C++26)
`<tuple>`(C++11)
`<typeindex>`(C++11)
`<utility>`
`<variant>`(C++17)
Containers
`<array>`(C++11)
`<deque>`
`<flat_map>`(C++23)
`<flat_set>`(C++23)
`<forward_list>`(C++11)
`<hive>`(C++26)
`<inplace_vector>`(C++26)
`<list>`
`<map>`
`<mdspan>`(C++23)
`<queue>`
`<set>`
`<span>`(C++20)
`<stack>`
`<unordered_map>`(C++11)
`<unordered_set>`(C++11)
`<vector>`
Iterators
`<iterator>`
Ranges
`<generator>`(C++23)
`<ranges>`(C++20)

Algorithms
`<algorithm>`
`<numeric>`
Strings
`<cctype>`
`<cstring>`
`<cuchar>`(C++11)
`<cwchar>`
`<cwctype>`
`<string_view>`(C++17)
`<string>`
Text processing
`<clocale>`
`<codecvt>`(C++11/17/26*)
`<locale>`
`<regex>`(C++11)
`<text_encoding>`(C++26)
Numerics
`<cfenv>`(C++11)
`<cmath>`
`<complex>`
`<linalg>`(C++26)
`<numbers>`(C++20)
`<random>`(C++11)
`<simd>`(C++26)
`<stdckdint.h>`(C++26)
`<valarray>`
Time
`<chrono>`(C++11)
`<ctime>`
C compatibility
`<ccomplex>`(C++11/17/20*)
`<ciso646>`(until C++20)
`<cstdalign>`(C++11/17/20*)
`<cstdbool>`(C++11/17/20*)
`<ctgmath>`(C++11/17/20*)

Input/output
`<cinttypes>`(C++11)
`<cstdio>`
`<filesystem>`(C++17)
`<fstream>`
`<iomanip>`
`<iosfwd>`
`<iostream>`
`<ios>`
`<istream>`
`<ostream>`
`<print>`(C++23)
`<spanstream>`(C++23)
`<sstream>`
`<streambuf>`
`<strstream>`(C++98/26*)
`<syncstream>`(C++20)
Concurrency support
`<atomic>`(C++11)
`<barrier>`(C++20)
`<condition_variable>`(C++11)
`<future>`(C++11)
`<hazard_pointer>`(C++26)
`<latch>`(C++20)
`<mutex>`(C++11)
`<rcu>`(C++26)
`<semaphore>`(C++20)
`<shared_mutex>`(C++14)
`<stdatomic.h>`(C++23)
`<stop_token>`(C++20)
`<thread>`(C++11)
Execution support
`<execution>`(C++17)

This header is part of thelanguage support library.

This header supplies implementation-dependent information about the standard library (such as implementation-specific library version macros).

Including<version> also defines alllibrary feature-test macros.

[edit] Notes

Prior to C++20, including<ciso646> is sometimes used for this purpose.

[edit]See also

Library feature-test macros defined in the header<version>(C++20)

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