In some versions of Fortran, the default type of variables starting with I, J, K or L is integer, while other varianles are by default typed as real. The Fortran statement DECLARE can be used to explicitly declare a variables as being of a specific type.
The variable GOD stats with G and hence is implicitly real, unless you add an appropriate declare statement.
He reminded my of my FORTRAN 66 days at university when studying “computer usage for chemists”:
I remember a “computer usage for chemists” course during my studies where (end of the 1980s!) were supposed to program in FORTRAN 66.
Luckily the VAX/VMS machine supported a much more recent FORTRAN version and had support for 132 columns as well, which allowed me to indent properly (like I was used from my Pascal background).This tremendously helped me solve basically this problem:
import tables with
atom code, radius and valence (bonding count)
atom1 code, atom2 code, minimum distance, maximum distance
atom code, X/Y/Z coordinate
determine which bonds can occur
walk the bonds and determine the atomic structure, including cycle count
Especially the last one was easiest to solve with recursion, which FORTRAN does not support. So I wrote my own stack structure and solved the problem.
The student coach was mad when she found out I had printed the full documentation on continuous form paper which took the printer about half an hour for printing the ~100 pages.
Next morning, I had read it front-to-back and colour-indexed all the sections so it was far easier to find what the compiler could do for me. She could not believe I had done that.
All my co students were on a (non shielded!) 300 meter multiplexed serial connection with VT-120 emulators from PC’s with all sorts of connection problems.
I discovered a small room right above the VAX/VMS machine having a couple of terminals with direct connections that were hardly used. A few of them were VT-240 that had a session switch allowing for maximum 3 interactive sessions running at far higher priority than the compiler/linker batch queues provided.
This allowed me to perform quick release cycles of my project: 1 session for editing and inspecting logs, 1 session for compiling my last version, 1 session for linking the previously compiled version.
I was about the only student that delivered the project on time (:
“Dance like no one’s watching. 
The Wiert Corner - irregular stream of stuff 