Fortran

Hello World in Fortran

Every programming journey starts with Hello World. Let’s write our first Fortran program using modern free-form syntax.

The Code

Create a file named hello.f90:

1
2
3
4

program hello …

The Oldest Programming Languages Still in Production Use

Somewhere right now, a FORTRAN program written in the 1970s is predicting tomorrow’s weather. A COBOL system is processing your credit card transaction. A Lisp-based AI is helping plan a …