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The Standard

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Contents

     * [4]1 The Standard
          + [5]1.1 C Standards Committee
          + [6]1.2 C17
          + [7]1.3 C11
          + [8]1.4 C99
          + [9]1.5 C89 / C90 / C95

The Standard

   Note: Prices quoted here are current as of the date each was written but are not
   guaranteed to remain unchanged.

   The international standard which defines the C programming language is ISO/IEC
   9899 a joint effort of [10]ISO and [11]IEC and the participating countries via
   their national body's all of which make the standard available via whatever
   publishing arrangement(s) each makes, many of which are available via the web for
   easy purchasing. Each participating country adopts the standard into their own
   standards system (some use the same document number) though in some cases changes
   are made to the document -- the technical content should (and really must) remain
   the same.

   The working group (WG14) makes some of the drafts, the rationale by which they
   made their decisions (The Rationale) and issues raised against the standard
   (Defect Reports) available for free from their web site, see
   [12]Web_resources#Secondary_materials for the links.

   The latest freely available working paper (draft) by WG14 is [13]n3047 (aka C2x).

   The primary output of WG14 is ISO/IEC 9899, the C Standard. The following is a
   list of revisions to ISO/IEC 9899 that the committee has produced:

C Standards Committee

   ISO/IEC JTC1/SC22/[14]WG14 is the international standardization working group for
   the programming language C.

   The primary output of WG14 is ISO/IEC 9899, the C Standard. The following is a
   list of revisions to ISO/IEC 9899 that the committee has produced:

   Revision ISO publication Similar draft

   C2x Not available [15]N3096 [2023-04-02]

   C17 [16]ISO/IEC 9899:2018 [17]N2310 [2018-11-11] (early C2x draft)

   C11 [18]ISO/IEC 9899:2011 [19]N1570 [2011-04-04]

   C99 [20]ISO/IEC 9899:1999 [21]N1256 [2007-09-07]

   C89 [22]ISO/IEC 9899:1990 Not available

C17

   The current standard is ISO/IEC 9899:2018 (aka C17) -- this version addresses
   many defects reported for C11. It incorporates TCs (Technical Corrigenda) and
   does not introduce new language features. Sometimes mistakenly referred to as C18
   because of the ISO publication date.

   Sites that make one or more of these (standards) documents available are:

   ISO:
     * [23]CHF 198 - [24]https://www.iso.org/standard/74528.html -- same price for
       PDF download or PDF shipped on a CD.

   IEC:
     * [25]CHF 198 - [26]https://webstore.iec.ch/publication/63478 -- same price for
       PDF download or PDF shipped on a CD.

   The latest freely available draft is [27]c17_updated_proposed_fdis.pdf.

C11

   The older standard was ISO/IEC 9899:2011 -- (aka C11 and until it was adopted
   C1x) will soon be unavailable from official sources due to the adoption of C17.

   Sites that make one or more of these (standards) documents available are:

   ISO:
     * [28]CHF 238 -
       [29]http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?cs
       number=57853 -- same price for PDF download or PDF shipped on a CD.
     * ISO/IEC 9899/Cor1:2012:
       [30]http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnum
       ber=61717 -- PDF download

   USA INCITS (née ANSI) -- essentially identical to the ISO/IEC document:
     * [31]USD 60 - INCITS/ISO/IEC 9899:2012
       [32]http://webstore.ansi.org/RecordDetail.aspx?sku=INCITS%2FISO%2FIEC+9899-20
       12 -- PDF download.
     * ISO/IEC 9899/Cor1:2012:
       [33]http://webstore.ansi.org/RecordDetail.aspx?sku=ISO%2fIEC+9899%2fCor1%3a20
       12 -- PDF download

   The latest freely available draft is [34]N1570.

   The latest defect report summary for C11 is available at [35]n2244.htm.

C99

   The next older standard was ISO/IEC 9899:1999 (aka C99 and C9x) likely
   unavailable from any official sources, due to the ISO adoption of C11.

   The British Standards Institute (BSI) has published C99, TC1 and The Rationale in
   a bound book, see [36]Books#References for the link.

   Sites that make one or more of the documents available are:

   USA INCITS (née ANSI) -- PDF format download only:
     * [37]USD 30 - INCITS/ISO/IEC 9899:1999
       [38]http://webstore.ansi.org/RecordDetail.aspx?sku=INCITS%2fISO%2fIEC+9899-19
       99+(R2005)

   Techstreet -- PDF format free download, [39]USD 12 for printed edition:
     * ISO/IEC 9899/Cor1:2001:
       [40]http://www.techstreet.com/standards/iso_iec/9899_cor1_2001?product_id=103
       5925
     * ISO/IEC 9899/Cor2:2004:
       [41]http://www.techstreet.com/standards/iso_iec/9899_cor2_2004?product_id=120
       5982
     * ISO/IEC 9899/Cor3:2007:
       [42]http://www.techstreet.com/standards/iso_iec/9899_cor3_2007?product_id=152
       7765

   This is also effectively available for free as [43]N1256.

C89 / C90 / C95

   The older standards -- ANSI X3.159-1989 (aka C89), ISO/IEC 9899:1990 (aka C90),
   ISO/IEC 9899:1990/AMD 1:1995 (aka AMD1 or C95) -- are no longer available from
   official sources, so your best source is a printed book. C89 and C90 are
   identical except for the frontmatter and section numbering.

   AS 3955-1991 (C90) is still available from two sources:
     * [44]SAI-Global, the exclusive publisher for [45]Standards Australia:
          + [46]AUD 224.76 - PDF or hard copy (printed):
            [47]http://infostore.saiglobal.com/store/Details.aspx?ProductID=306911

     * USA [48]ANSI/[49]INCITS:
          + [50]USD 229 - PDF only:
            [51]http://webstore.ansi.org/ansidocstore/product.asp?sku=AS+3955%2D1991

   AMD1 (which transforms C90 into C95) can be ordered from [52]IHS (née Global
   Engineering Documents):
     * [53]USD 65 for PDF and [54]USD 82 for hard copy (printed): [55]enormous
       product url hidden

   Many standards can be ordered from good technical booksellers, such as [56]Opamp.

   Note: [57]Implementations which conform with C89/C90 are more widely available
   than those which conform with any later revision(s).
     ____________________________________________________________________________

   [58]Category Language, [59]Category Resources
   Retrieved from "[60]http://www.iso-9899.info/wiki/The_Standard"

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