Operation Between Numbers

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace numberOperations
{
    class Program
    {
        static void Main(string[] args)
        {
            double n1 = double.Parse(Console.ReadLine());
            double n2 = double.Parse(Console.ReadLine());
            string operation = Console.ReadLine();
            double result = 0;
            string odd;
            if (n2 == 0 && (operation == "/" || operation == "%"))
            {

                Console.WriteLine("Cannot divide {0} by zero",n1);
            }
            else
            {
                switch (operation)
                {
                    case "+":
                        result = n1 + n2;
                        if (result % 2 == 0)
                        {
                            odd = "even";
                        }
                        else
                        {
                            odd = "odd";
                        }
                        Console.WriteLine($"{n1} + {n2} = {result} - {odd}");
                        break;

                    case "-":
                        result = n1 - n2;
                        if (result % 2 == 0)
                        {
                            odd = "even";
                        }
                        else
                        {
                            odd = "odd";
                        }
                        Console.WriteLine($"{n1} - {n2} = {result} - {odd}");
                        break;

                    case "*":
                        result = n1 * n2;
                        if (result % 2 == 0)
                        {
                            odd = "even";
                        }
                        else
                        {
                            odd = "odd";
                        }
                        Console.WriteLine($"{n1} * {n2} = {result} - {odd}");
                        break;

                    case "/":
                        result = n1 / n2;
                        Console.WriteLine($"{n1} / {n2} = {result:F2}");
                        break;

                    case "%":
                        result = n1 % n2;
                        Console.WriteLine($"{n1} % {n2} = {result}");
                        break;

                    default:
                        break;
                }
            }
        }
    }
}