OddOrEven

  static void Main(string[] args)
        {
            Console.WriteLine("Please enter a number");
            int n = Convert.ToInt32(Console.ReadLine());
            if (isEven(n))
            {
                Console.WriteLine("Number is even");
            }
            else
            {
                Console.WriteLine("Number is odd");
            }

        }
        static bool isEven(int n)
        {
            bool isEven = true;

            for (int i = 1; i <= n; i++)
                isEven = !isEven;

            return isEven;
        }