import java.util.Scanner;

class Main {
  public static void main(String[] args) {
    int selection = 0;
    int solution = 0;
    int x = 0;
    int y = 0;
    Calculator calculator = new Calculator();
    calculator.print_menu();
    Scanner input = new Scanner(System.in);
    selection = input.nextInt();
    input.nextLine(); // consumption of newline
    System.out.println("Input two numbers: ");
    x = input.nextInt();
    y = input.nextInt();
    input.close();

    switch (selection) {
      case 0:
        System.out.println("Bye!");
        break;
      case 1:
        solution = calculator.add(x, y);
        break;
      case 2:
        solution = calculator.sub(x, y);
        break;
      case 3:
        solution = calculator.mul(x, y);
        break;
      case 4:
        solution = calculator.div(x, y);
        break;
      // case 5:
      //   calculator.factorial(5);
      //   break;
      default:
        System.out.println("How did you get here?");
    }
    System.out.println("soln: " + solution);
  }
}