Mitch Richling: Example FORTRAN 77 Programs

Did someone just ask you to update a 30 year old FORTRAN 77 program? If so, then you may be in the right place. Here you will find several small, but complete, FORTRAN 77 programs illustrating many common language concepts and constructs. The intent is to give programmers with no FORTRAN 77 experience a core set of fundamental examples to help them get up to speed quickly on this venerable language. If you really want to become an expert FORTRAN 77 programmer, then the best way is to look at quality code – check out the BLAS and LAPACK for a start. Good luck.

Get it all on github: https://github.com/richmit/ex-f77/

types.f

How to explicitly declare variable types

implv.f

How to use the rather dubious implicit variable type features of FORTRAN

implml.f

Demonstrates the "IMPLICIT NONE" statement specified in MIL-STD-1753

array.f

How to declare and use arrays

arrsub.f

Arrays and subroutines

parm.f

Parameter "variables"

datas.f

The "data" statement used to initialize variables.

coms.f

Common blocks

chars.f

Character "strings"

io.f

Simple console I/O

fileio.f

Simple file I/O

fmtio.f

Formatted I/O

intFil.f

How to use "Internal Files"

statf.f

One line functions

func.f

Regular functions

subs.f

Subroutines

savey.f

Demonstrates the SAVE statement

arith.f

Illustrates some arithmetic concepts in FORTRAN

do.f

The FORTRAN 77 do loop

loopsg.f

FORTRAN 77 looping constructs

goto.f

Simple GOTO – infinite loop

loopml.f

Nonstandard, but common, loop construct specified in MIL-STD-1753

ifth.f

If-Then and all of its little buddies!

hello.f

A simple hello world program!