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

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This header is part of the language support library.

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

Including <version> also defines all library feature-test macros.

Notes

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

See also

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