Editing Fortran (section)

===Fortran 2018===
The Fortran 2018 revision of the language was earlier referred to as Fortran 2015.<ref name="Fortran2018name">{{cite web|url=https://software.intel.com/en-us/blogs/2017/11/20/doctor-fortran-in-eighteen-is-the-new-fifteen|title=Doctor Fortran in "Eighteen is the new Fifteen"|publisher=Software.intel.com|access-date=November 20, 2017}}</ref> It was a significant revision and was released on November 28, 2018.<ref name="F2018">{{cite web|url=https://wg5-fortran.org/f2018.html|publisher=ISO|title=Fortran 2018|access-date=November 30, 2018}}</ref>

Fortran 2018 incorporates two previously published Technical Specifications:
* ISO/IEC TS 29113:2012 Further Interoperability with C<ref name="TS29113">{{cite web|url=https://wg5-fortran.org/N1901-N1950/N1942.pdf |archive-url=https://web.archive.org/web/20171201033143/https://wg5-fortran.org/N1901-N1950/N1942.pdf |archive-date=December 1, 2017 |url-status=live|title=Further Interoperability with C|publisher=ISO|access-date=November 20, 2017}}</ref>
* ISO/IEC TS 18508:2015 Additional Parallel Features in Fortran<ref name="TS18508">{{cite web|url=http://isotc.iso.org/livelink/livelink?func=ll&objId=17288706&objAction=Open|title=Additional Parallel Features in Fortran|publisher=ISO|access-date=November 20, 2017}}</ref>

Additional changes and new features include support for ISO/IEC/IEEE 60559:2011 (the version of the [[IEEE 754|IEEE floating-point standard]] before the latest minor revision IEEE {{not a typo|754–2019}}), hexadecimal input/output, IMPLICIT NONE enhancements and other changes.<ref name="F2015newfeat">{{cite web|url=http://isotc.iso.org/livelink/livelink?func=ll&objId=19044944&objAction=Open|publisher=ISO|title=The New Features of Fortran 2015|access-date=June 23, 2017}}</ref><ref name="Fortran2015Closes">{{cite web|url=https://software.intel.com/en-us/blogs/2015/09/04/doctor-fortran-in-one-door-closes|title=Doctor Fortran in "One Door Closes"|publisher=Software.intel.com|access-date=September 21, 2015}}</ref><ref name="Fortran2015">{{cite web|url=http://software.intel.com/en-us/blogs/2013/08/08/doctor-fortran-goes-dutch-fortran-2015|title=Doctor Fortran Goes Dutch: Fortran 2015|publisher=Software.intel.com|access-date=November 19, 2014
 | url-status   = dead
 | archive-url  = https://web.archive.org/web/20170401092649/software.intel.com/en-us/blogs/2013/08/08/doctor-fortran-goes-dutch-fortran-2015
 | archive-date = 2017-04-01
 | quote        = The ISO Fortran Standards Committee held its annual meeting in Delft, [...]
}}
</ref><ref>
{{cite manual |url=http://j3-fortran.org/doc/year/18/18-007r1.pdf |title=Fortran 2018 Interpretation Document |date=October 9, 2018}}
</ref>

Fortran 2018 deleted the arithmetic IF statement.  It also deleted non-block DO constructs - loops which do not end with an END DO or CONTINUE statement.  These had been an obsolescent part of the language since Fortran 90.

New obsolescences are: COMMON and EQUIVALENCE statements and the BLOCK DATA program unit, labelled DO loops, specific names for intrinsic functions, and the FORALL statement and construct.