C18 (C standard revision)

C18 (previously known as C17) is the informal name for ISO/IEC 9899:2018,[1] the most recent standard for the C programming language, published in June 2018. It replaced C11 (standard ISO/IEC 9899:2011).[2]

Not to be confused with C++17.
C Language Revisions
K&R C • ANSI C • C99 • C11 • C18 • C2x

C18 will be superseded by C2x.[3]

Changes from C11

C18 addressed defects in C11 without introducing new language features.[2]

The __STDC_VERSION__ macro is increased to the value 201710L.

Compiler support

List of compilers supporting C18:

See also

References
  1. "ISO/IEC 9899:2018 - Information technology -- Programming languages -- C". www.iso.org.
  2. "The Standard - C". www.iso-9899.info.
  3. "WG 14 Document log". www.open-std.org.
  4. "Using the GNU Compiler Collection (GCC): C Dialect Options". gcc.gnu.org.
  5. http://releases.llvm.org/7.0.0/tools/clang/docs/UsersManual.html#differences-between-various-standard-modes
  6. "IAR Information Center for Arm - Release notes". netstorage.iar.com.
Preceded by
C11		 C language standards Succeeded by
C2x

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