Fortran Code Guessing Game

A thinking-out-loud analysis of Fortran code. What could a programmer accustomed to various modern languages figure out about a Fortran code snippet?

In one of my recent articles, I wrote a snippet of Fortran code to argue that the programming languages of old are not that different from the ones we use today. One could guess a lot of what is written there if one has some exposure to some different languages. I am writing this for the benefit of one of my readers, Matthew, but I…