title	date	categories	tags
C Standards	2023-06-14 19:00:20 +0800	Programming Languages C	standards

ISO

• https://www.iso.org/ics/35.060/x/

  LANGUAGES USED IN INFORMATION TECHNOLOGY

• https://www.iso.org/committee/45020/x/catalogue/

  STANDARDS BY ISO/IEC JTC 1 Information technology

• https://www.iso.org/committee/45202.html

  ISO/IEC JTC 1/SC 22 Programming languages, their environments and system software interfaces

C Standards

• http://www.open-std.org/JTC1/SC22/WG14/

  The official home of ISO/IEC JTC 1/SC 22/WG 14.

ISO/IEC 9899:1990

Official standard: https://www.iso.org/standard/17782.html

Draft: Not available

• ISO/IEC 9899:1990/COR 1:1994

  Technical Corrigendum 1 (ISO/IEC 9899 TCOR1) was approved in 1995.

  The Technical Corrigenda are available here as permitted by ISO Council resolution 41/1997.

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

  TC1 for C90: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n423.pdf

  Source: https://stackoverflow.com/q/81656/

• ISO/IEC 9899:1990/COR 2:1996

  Technical Corrigendum 2 (ISO/IEC 9899 TCOR2) was published in 1996.

  The Technical Corrigenda are available here as permitted by ISO Council resolution 41/1997.

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

• ISO/IEC 9899:1990/AMD 1:1995

ISO/IEC 9899:1999

Official standard: https://www.iso.org/standard/29237.html

Draft:

The latest publicly available version of the C99 standard is the combined C99 + TC1 + TC2 + TC3, WG14 N1256, dated 2007-09-07. This is a WG14 working paper, but it reflects the consolidated standard at the time of issue.

Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

An earlier version of C99 incorporating only TC1 and TC2: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf

Source: https://stackoverflow.com/q/81656/

Working draft for the original (i.e. pre-corrigenda) C99: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n843.htm (HTML) and http://www.dkuug.dk/JTC1/SC22/WG14/www/docs/n843.pdf (PDF). Note that there were two later working drafts: N869 and N878, but they seem to have been removed from the WG14 website, so this is the latest one available.

Source: https://stackoverflow.com/q/81656/

• ISO/IEC 9899:1999/COR 1:2001

  Technical Corrigendum 1 (ISO/IEC 9899:1999 Cor. 1:2001(E)) was published in 2001 (additional documentation).

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

• ISO/IEC 9899:1999/COR 2:2004

  Technical Corrigendum 2 (ISO/IEC 9899:1999 Cor. 2:2004(E)) was published in 2004.

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

• ISO/IEC 9899:1999/COR 3:2007

  Technical Corrigendum 3 (ISO/IEC 9899:1999 Cor. 3:2007(E)) was published in 2007. It can be obtained free of charge from ISO.

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

• Rationale

  The rationale for the C99 standard is available.

  Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

ISO/IEC 9899:2011

Official standard: https://www.iso.org/standard/57853.html

Draft:

The latest publically available version of the C11 standard is the document WG14 N1570, dated 2011-04-12. This is a WG14 working paper, but it reflects what was to become the standard at the time of issue.

Source: http://www.open-std.org/JTC1/SC22/WG14/www/standards.html

• ISO/IEC 9899:2011/COR 1:2012

  ISO/IEC 9899:2011/Cor 1:2012 (C11's only technical corrigendum): This can be viewed at https://www.iso.org/obp/ui/#iso:std:iso-iec:9899:ed-3:v1:cor:1:v1:en but cannot be downloaded. It is the actual corrigendum, not a draft.

  Source: https://stackoverflow.com/q/81656/

ISO/IEC 9899:2018

Official standard: https://www.iso.org/standard/74528.html

Draft:

http://www.open-std.org/JTC1/SC22/WG14/www/docs/n2310.pdf

Source: http://www.open-std.org/jtc1/sc22/wg14/www/projects

ISO/IEC 9899:2018 (C17/C18): https://web.archive.org/web/20181230041359if_/http://www.open-std.org/jtc1/sc22/wg14/www/abq/c17_updated_proposed_fdis.pdf (N2176)

Source: https://stackoverflow.com/q/81656/

Difference between Standards

• C90 vs C89

  Almost the same as ANSI X3.159-198 (C89) except for the frontmatter and section numbering. There is at least one textual difference in section 6.5.7 (previously 3.5.7), where "a list" became "a brace-enclosed list". Note that the conversion between ANSI and ISO/IEC Standard is seen inside this document, the document refers to its name as "ANSI/ISO: 9899/99" although this isn't the right name of the later made standard of it, the right name is "ISO/IEC 9899:1990"

  Source: https://stackoverflow.com/q/81656/

• C99 vs C89/C90

  List of changes between C89/C90 and C99: http://port70.net/~nsz/c/c89/c9x_changes.html

  Source: https://stackoverflow.com/q/81656/

Miscellaneous

• Redirect to draft

  https://wg14.link/c99

  https://wg14.link/c11

  https://wg14.link/c18

• HTML version of the drafts

  • http://port70.net/~nsz/c/c99/n1256.html

  • http://port70.net/~nsz/c/c99/n1256.pre.html

• Other links

  • https://stackoverflow.com/q/81656/
  • https://iso-9899.info/wiki/The_Standard
  • https://herbsutter.com/2010/03/03/where-can-you-get-the-iso-c-standard-and-what-does-open-standard-mean/