Any idea why they'd be teaching people to write code in Excel?
Getting back on topic...
Have you asked the teacher what's up? (perhaps somewhat carefully; it doesn't do to make enemies.)
Do you have an "adviser"? Have you asked them?
It's early in the term, right? Perhaps you will progress to real C++ "shortly." Or something beyond VBA. Having more than one example of "programming language" is a generally useful thing.