Forever and a day ago I applied to North Dakota as undecided, but I think I’ve settled on Computer Science. Would I still be able to base my classes around Computer Science? Not sure if I’m going there yet, but I would like to know, in case I do.
It depends on the university. Some admit by major, and some have separate “schools”'within the university that require separate admissions. You need to check the college website for more details, and you can call admissions if you aren’t sure.
Based on UND’s class schedule, it does not look like CS courses tend to be filled to capacity. So getting into the courses as an undeclared student is probably not difficult.