import java.util.Random;
import java.util.Scanner;
import java.util.ArrayList;

public class AdditionQuizJava13 {


       void run() {
            Random random = new Random();
            ArrayList<String> questions = new ArrayList<String>();

            System.out.println("1: New question");
            System.out.println("2: List all questions");
            System.out.println("0: Terminate the program");

        }
        void newQuestion () {
            Scanner input = new Scanner(System.in);
            Random random = new Random();
            int command = input.nextInt();
            switch (command) {
                case 1:
                    int randomNumber1 = random.nextInt(500);
                    int randomNumber2 = random.nextInt(600);

                    String question = ("What is " + randomNumber1 + " + " + randomNumber2 + "?");


                    System.out.println("What is " + randomNumber1 + " + " + randomNumber2 + "?");
                    questions.add(question);
                    int answer = input.nextInt();

                    break;
                case 2:
                    System.out.println(questions);
                    break;
                case 0:
                    System.out.println("Bye!");
                    return;

                default:
                    System.out.println("Wrong command, try again");

            }
        }

            void newQuestionOutput () {
                if (answer == randomNumber1 + randomNumber2) {
                    System.out.println("The answer is correct");
                } else if (answer != randomNumber1 + randomNumber2) {
                    System.out.println("The answer is incorrect");
                }
            }





                    public static void main(String[] args) {
                    run();
                    newQuestion();
                    newQuestionOutput();
                }
            }