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[DanRRight]

in current Fortran standard and FTN95? Is it still 19?

[PaulLaidler]

I have had a quick look at the Fortran 95 Standard and cannot see any mention of a limit.

[davidb]

For FORTRAN 77

maximum is 19

For Fortran 90 and Fortran 95

maximum in fixed-form source files is 19 (same as FORTRAN 77)
maximum in free-form source files is 39

For Fortran 2003 and Fortran 2008

maximum in fixed-form and free-form files is 255
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Programmer in: Fortran 77/95/2003/2008, C, C++ (& OpenMP), java, Python, Perl

[JohnCampbell]

Based on this example, the limit is 99 for FTN95 free format.
This appears arbitrary, but can have an effect in extended data statements or long COMMON definitions when using in-line comments (Modules do not have this problem).

[DanRRight]

Thanks for the info. I find FTN95 often exceeds the Standard Fortran95 limits

[davidb]

Johns example gives an error that the number of continuations is more than 99. However if you use the /ISO flag, the compiler gives the error that the number of lines is more than 39.
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Programmer in: Fortran 77/95/2003/2008, C, C++ (& OpenMP), java, Python, Perl