ComplexConditionsExamProblems-Operations_AngelKalinkov

import java.math.BigDecimal;
import java.util.Scanner;

public class Operations {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int num1 = Integer.parseInt(scanner.nextLine());
        int num2 = Integer.parseInt(scanner.nextLine());
        String operator = scanner.nextLine();
        String output = "";

        if (num2 == 0 && (operator.equals("/") || operator.equals("%"))) {
            output = String.format("Cannot divide %d by zero", num1);
        } else {
            switch (operator) {
                case "+":
                    output = String.format("%d %s %d = %d - %s", num1, operator, num2, (num1 + num2),
                            new BigDecimal(num1 + num2).intValueExact() % 2 == 0 ? "even" : "odd");
                    break;
                case "-":
                    output = String.format("%d %s %d = %d - %s", num1, operator, num2, (num1 - num2),
                            new BigDecimal(num1 - num2).intValueExact() % 2 == 0 ? "even" : "odd");
                    break;
                case "*":
                    output = String.format("%d %s %d = %d - %s", num1, operator, num2, (num1 * num2),
                            new BigDecimal(num1 * num2).intValueExact() % 2 == 0 ? "even" : "odd");
                    break;
                case "/":
                    output = String.format("%d %s %d = %.2f", num1, operator, num2, ((num1 * 1.0) / num2));
                    break;
                case "%":
                    output = String.format("%d %s %d = %d", num1, operator, num2, (num1 % num2));
                    break;
                default:
                    System.out.println("Unknown operator");
            }
        }
        System.out.println(output);
    }
}