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Also called Fortran ISO/IEC 2004

**Fortran 2003** is a significant revision of the Fortran 95 standard. Some of the major new features are

• Parametrized derived types.
• Object-oriented programming: type extension and inheritance, polymorphism, dynamic type allocation, and type-bound procedures.
• Procedure pointers.
• C interoperability.
• OS integration: command-line arguments and environment variables.
• IEEE arithmetic
• Allocatable enhancements

See Fortran 2003 status.

gfortran

See Fortran2003 (http://gcc.gnu.org/wiki/Fortran2003) and [GCC:Fortran2003Status](http://gcc.gnu.org/wiki/Fortran2003Status).

Intel Fortran

See the article on support for Fortran language standards (http://software.intel.com/en-us/articles/intel-fortran-compiler-support-for-fortran-language-standards).

NAG Fortran - NAGWare f95 Compiler Release 5.2 Release Notes (http://www.nag.com/nagware/np/r52_doc/relnotes.html)

• Fortran 2008

Although the official Fortran 2003 standard must be purchased from the ISO, the Draft International Standard produced by the committee is freely available. This document is [ISO/IEC JTC1/SC22/WG5 N1601](ftp://ftp.nag.co.uk/sc22wg5/N1601-N1650/N1601.pdf.gz) (gzip compressed PDF) dated May 3, 2004 (the equivalent J3 document is [04-007](http://www.j3-fortran.org/doc/2003_Committee_Draft/04-007.pdf)).

• ISO/IEC JTC1/SC22/WG5 N1601 (ftp://ftp.nag.co.uk/sc22wg5/N1601-N1650/N1601.pdf.gz) Fortran 2003 Draft International Standard.
• Reid, John (2007) The New Features of Fortran 2003 - http://dx.doi.org/10.1145/1243413.1243415
• ACM SIGPLAN Fortran Forum * 26(1), 10-33. (Also available as [N1648](ftp://ftp.nag.co.uk/sc22wg5/N1601-N1650/N1648.pdf)
• Reid, John (2003) The future of Fortran http://dx.doi.org/10.1109/MCISE.2003.1208645 Computing in Science & Engineering 5, 59–67
• Fortran 2003 extensions and the NAG Fortran Compiler - http://nag.com/nagware/NP/doc/nag_f2003.pdf
• Fortran 2003 standard: which free document gets closest - https://groups.google.com/d/topic/comp.lang.fortran/2r3NOSfuIXA/discussion) on comp.lang.fortran

(FtrnWiki)

Fortran Research:

• Fortran 2003 on DuckDuckGo
• Fortran 2003 on Fortran Wiki
• Fortran 2003 on Fortran-Lang.org
• Fortran 2003 on wg5-fortran.org (ISO Fortran Standards)
• Fortran 2003 on StdLib.Fortran-Lang.org
• Fortran 2003 on O'Reilly
• Fortran 2003 on GitHub
• Fortran 2003 on Reddit
• Fortran 2003 on StackOverflow
• Fortran 2003 on scholar.google.com
• Fortran 2003 on YouTube

Fair Use Sources:

• B097819373 (MdFtrn 2020)
• Fortran Wiki (FtrnWiki) https://fortranwiki.org/fortran/show/Fortran+2003
• Fortran-Lang.org
• wg5-fortran.org (ISO-IEC Fortran Standards Committee)
• Fortran 2023 Draft Standard - Fortran ISO-IEC Standard