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file extension for free form FORTRAN 2018

file extension for free form FORTRAN 2018

file extension for free form FORTRAN 2018

(OP)
with what file extension do we save a FORTRAN 2018 file in order to compile it with gfortran in free form?

RE: file extension for free form FORTRAN 2018

IMO, it depends on which extensions your compiler supports. I only know gfortran and using it only with the extension f95.
According to the manual, gfortran supports the following extensions for free-form: .f90, .f95, .f03, .f08
-see: https://gcc.gnu.org/onlinedocs/gfortran/GNU-Fortra...

RE: file extension for free form FORTRAN 2018

Basically anything that is not .f or .for. The version of Fortran is determined by -std= not by the file extension (that is no .f or .for).

RE: file extension for free form FORTRAN 2018

(OP)
weird it doesn't support .f18 or something more recent.
i guess .f90, .f95, .f03, .f08 do not support the FORTRAN 2018 new features.

ty

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