Ass1 Q1

I'm trying to work my way through Ass1 at the moment and it's going quite well... However I'm not sure what to do about one of the instructions at the beginning of the assignment:

"Try to write robust programs, i.e. make provision for all possible inputs to the program, displaying error messages or warnings where appropriate."

Since chapters 1 to 3 don't cover any such matters, are we expected to do anything other than comment the code clearly?

Thanks - Good luck to ya'all

I just commented the code clearly