[ch_123]

This is absolutely correct - Fortran standards after 90/95 have mostly added extra features, rather than fundamental changes to how people write Fortran. Fortran 2003 added OO support, but I don’t believe that has seen widespread adoption.

[ryl00]

Fortran 2003 also added BIND(C) and ISO_C_BINDING, which are massively useful in standardizing the C interop.

[madhadron]

Oh, that's a nice thing. I still remember carefully appending underscores to names to thing to make C and FORTRAN talk in gcc/g77.