how can i make program using arrays related to my course civil engineering?
Please, use code tags when you post. It makes it easier to read. Also, in your programming, the language you are using is C, not C++. You also are using main incorrect. you want to declare main as such
Now what exactly is your issue that you are attempting to do? Your Op is vague.
public class GrossmontBank
//class variables (global - accessible throughout this class)
//scanner object to be used throughout
private static Scanner input = new Scanner(System.in);