Number of characters in one line in free-format in Fortran90

[Nazmul_I_1]

Does Fortran90 allow to write more than 132 charactes in a line in free-format? If I write more than 132 characters in a line in free-format Fortran90, what will happen then?

[DavidWhite]

According to the documentation, compiler limits are:

Fortran source line length fixed form: 72 (or 132 if /extend_source is in effect) characters;

free form: 7200 characters

However, for readability and code maintenance, I would suggest shorter lines are best!

[Nazmul_I_1]

Thanks, David White for your valuable information!

[andrew_4619]

Enforcing standards for free form warns for over 132 (or is it 128?).

[Steven_L_Intel1]

132 is what the standard says.

[Nazmul_I_1]

Thanks Steve Lionel for giving the information. However, can you tell me that what will happen if I write more than 132 character in one line?

[Steven_L_Intel1]

By default, it will work fine. We support, as an extension, a much longer line. If you ask for standards warnings, you'll get a warning.

I'd discourage you from doing this, though, as it's not portable.