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C17 (C standard revision)
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<p>C17, formally ISO/IEC 9899:2018, is an <a href="/facts/Open_standard/RGvhGQVI">open standard</a> for the <a href="/facts/C_/Ky2No763">C</a> programming language, prepared in 2017 and published on 2018-07-05. It replaced <a href="/facts/C11_(C_standard_revision)/SNelulWN">C11</a> (standard ISO/IEC 9899:2011), and is superseded by <a href="/facts/C23_(C_standard_revision)/1VvQNwSb">C23</a> (ISO/IEC 9899:2024) since October 2024. Since it was under development in 2017, and officially published in 2018, C17 is sometimes referred to as C18. </p>