C17 (C standard revision)

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Short description: C programming language standard, 2017 revision


C17 is the informal name for ISO/IEC 9899:2018,[1] the most recent standard for the C programming language, prepared in 2017 and published in June 2018. It replaced C11 (standard ISO/IEC 9899:2011),[2] and will be superseded by C23 (ISO/IEC 9899:2023) when it is published in 2024.[3] Since it was under development in 2017, and officially published in 2018, C17 is sometimes referred to as C18.[4]

Changes from C11

C17 fixes numerous minor defects in C11 without introducing new language features.[2]

The __STDC_VERSION__ macro is increased to the value 201710L.

For a detailed list of changes from the previous standard, see Clarification Request Summary for C11.[5]

Compiler support

List of compilers supporting C17:

See also

References

  1. ↑ "ISO/IEC 9899:2018 - Information technology -- Programming languages -- C". https://www.iso.org/standard/74528.html. 
  2. ↑ 2.0 2.1 "The Standard - C". http://www.iso-9899.info/wiki/The_Standard. 
  3. ↑ "WG 14 Document log". http://www.open-std.org/jtc1/sc22/wg14/www/wg14_document_log.htm. 
  4. ↑ "Using the GNU Compiler Collection (GCC): C Dialect Options". https://gcc.gnu.org/onlinedocs/gcc-8.1.0/gcc/C-Dialect-Options.html#index-std-1. 
  5. ↑ "Clarification Request Summary for C11 Version 1.13". October 2017. http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2244.htm. 
  6. ↑ "Using the GNU Compiler Collection (GCC): C Dialect Options". https://gcc.gnu.org/onlinedocs/gcc-8.1.0/gcc/C-Dialect-Options.html#index-std-1. 
  7. ↑ "Clang 7 documentation — Clang Compiler User's Manual". http://releases.llvm.org/7.0.0/tools/clang/docs/UsersManual.html#differences-between-various-standard-modes. 
  8. ↑ "IAR Information Center for Arm - Release notes". https://netstorage.iar.com/SuppDB/Public/UPDINFO/013857/arm/doc/infocenter/readme.ENU.html. 
  9. ↑ "C11 and C17 Standard Support Arriving in MSVC". 14 September 2020. https://devblogs.microsoft.com/cppblog/c11-and-c17-standard-support-arriving-in-msvc/. 
  10. ↑ "Changelog - Added support for new C17 standard". http://www.smorgasbordet.com/pellesc/changes_800_900.htm. 

External links

Preceded by
C11 		C language standards Succeeded by
C23




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