Funny to see this and read some of the comments here - at my last job, where I was doing mostly C#, I was asked to help maintain/update some Fortran code that used an Excel spreadsheet with VBA glue as the UI. I didn't find Fortran to be very pleasant to work with, mostly because there seems to be very little online documentation on how the syntax works, and there seems to have been several major changes to the syntax in different Fortran versions.

I remember trying to figure out how to get an array of strings from Excel to Fortran. The farthest I got was getting the combined strings into the Fortran and getting stuck trying to figure out how to manipulate arrays in FORTRAN 90 I think it was.