import java.util.*;

public class Main
{
    public static void main(String[] args)
    {
        System.out.println("Calculator!");
        Scanner input = new Scanner(System.in);
        System.out.println("1. Add");
        System.out.println("2. Subtract");
        System.out.println("3. Multiply");
        System.out.println("4. Divide");
        int choice = input.nextInt();
        System.out.println("");
        System.out.print("Enter a number: ");
        float number1 = input.nextFloat();
        System.out.println("");
        System.out.print("Enter second number: ");
        float number2 = input.nextFloat();
        switch(choice){
            case 1:
                float addition = number1 + number2;
                System.out.printf("\nAdded!: %f", addition);
                break;
            case 2:
                float subtraction = number1 - number2;
                System.out.printf("\nSubtracted!: %f", subtraction);
                break;
            case 3:
                float multiplication = number1 * number2;
                System.out.printf("\nMultiplied!: %f", multiplication);
                break;
            case 4:
                float division = number1 / number2;
                System.out.printf("\nDivided!: %f", division);
                break;
            default:
                System.out.println("Please pick a number 1-4.");
                System.out.println("Press enter twice(?) to exit.");
                input.nextLine();
                System.exit(1);
                break;
        }
    }
}