import java.util.Scanner;

enum MathOperators {
    ADD,
    SUBTRACT,
    MULTIPLY,
    DIVIDE,
    MODULO
}


public class Ex9 {
    public static void main(String[] args) {

        Scanner calculator = new Scanner(System.in);

        System.out.print("Enter first number: ");
        double firstNumber = calculator.nextDouble();
        System.out.print("Enter second number: ");
        double secondNumber = calculator.nextDouble();
        //System.out.print("Write what would you like to do with numbers(ADD, SUBTRACT, MULTIPLY, DIVIDE or MODULO): ");
        //String operation = calculator.next();  //nextLine make an error

        MathOperators operator = MathOperators.ADD;

        double result;
        char operatorSymbol;
        switch (operator) {
            case ADD:
                result = firstNumber + secondNumber;
                operatorSymbol = '+';
                break;
            case SUBTRACT:
                result = firstNumber - secondNumber;
                operatorSymbol = '-';
                break;
            case MULTIPLY:
                result = firstNumber * secondNumber;
                operatorSymbol = '*';
                break;
            case DIVIDE:
                result = firstNumber / secondNumber;
                operatorSymbol = '/';
                break;
            case MODULO:
                result = firstNumber % secondNumber;
                operatorSymbol = '%';
                break;
            default:
                result = 0;
                operatorSymbol = ' ';
        }

        System.out.println(firstNumber + " " + operatorSymbol + " " + secondNumber + " = " + result);
    }
}