import java.util.InputMismatchException;
import java.util.Scanner;
public class Addition {
    private int total = 0;
    private Scanner in = new Scanner(System.in);
    private boolean proceed = true;

    public int setNumber(){
        while(proceed){
            System.out.println("Type a number to add or any 'letter' to quit");
            if(in.hasNextInt()){
                int temp = in.nextInt();
                total += temp;
            }else{
                proceed = false;
            }
        }
        return total;
    }
}