C - Approved standards 2013-03-05: home | projects | documents | contributing | meetings | contacts ISO/IEC 9899 - Programming languages - C The current standard for Programming Language C (C11) is ISO/IEC 9899:2011, published 2011-12-08. Technical Corrigendum 1 (ISO/IEC 9899:2011/Cor. 1:2012) was published in 2012. Published ISO and IEC standards can be purchased from a member body of ISO or IEC.