Fortran 90

I am an old fortran hack from back in the days of FORTRAN-IV. Along the way, I did a lot with RATFOR (which was a very cool preprocessor, aimed at making fortran as much like C as possible). I completely missed fortran 77 (and who is complaining), and now am helping out with a project using fortran 90. This is (as usual) my own set of notes to help me along with what is new.

A nice set of notes on Fortran 90 for the Fortran 77 Programmer is available online.

Here are some highlights:

Use the ! for comments (and OK inline).
Use the & at the end of a line for continuation.
Still case insensitive.
implicit none
integer :: i, j, k
real :: x, y, z
do i=1,10 .... end do
if ... end if
select case (var) ... end select
module is an improved replacement for block data

Have any comments? Questions? Drop me a line!

Adventures in Computing / tom@mmto.org