Operations Between

import java.util.Scanner;

public class OperationsBetweenNumbers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Integer n1 = Integer.parseInt(scanner.nextLine());
        Integer n2 = Integer.parseInt(scanner.nextLine());
        String op = scanner.nextLine();
        Integer result = 0;
        Double result2 = 0.00;
        String finalResult = "";
        String error = "";

        switch (op){
            case "+":
                result = n1 + n2;
                if(result % 2 == 0){
                    finalResult = "even";
                }else{
                    finalResult = "odd";
                }
                break;
            case "-":
                result = n1 - n2;
                if(result % 2 == 0){
                    finalResult = "even";
                }else{
                    finalResult = "odd";
                }
                break;
            case "*":
                result = n1 * n2;
                if(result % 2 == 0){
                    finalResult = "even";
                }else{
                    finalResult = "odd";
                }
                break;
            case "/":
                if(n2 != 0){
                    double n3 = n1;
                    double n4 = n2;
                    result2 = n3 / n4;
                }else{}
                break;
            case "%":
                if(n2 != 0){
                    result = n1 % n2;
                }else{}
                break;
            default:
                break;
        }

        if(!op.equals("/") && !op.equals("%")){
            System.out.printf("%d %s %d = %d - %s", n1, op, n2, result, finalResult);
        }else {
            if(n2 == 0){
                System.out.printf("Cannot divide %d by zero", n1);
            }else {
                if(op.equals("/")){
                    System.out.printf("%d %s %d = %.2f", n1, op, n2, result2);
                }else{
                    System.out.printf("%d %s %d = %d", n1, op, n2, result);
                }
            }
        }

    }
}