Some programs provide the ability to add arguments when executing it in order to change a particular behavior or modify how the program operates. As an example lets look at the command line ...

Building upon this foundation, we will now look at how to create more complex applications, along with how to parse and use arguments passed to Ada applications on the command line (CLI).

I'm also supposed to check if the number of arguments is correct in the function and i'm lost on that idea. I can't seem to find any examples to look at in the textbook.