using System;

​

class Program

{

    static void Main()

    {

        string input;

        do

        {

            Console.Write("Entra una paraula o frase (o 'TENET' per acabar): ");

            input = Console.ReadLine();

            if (input != "TENET")

            {

                bool isPalindrome = IsPalindrome(input);

                Console.WriteLine($"'{input}' és un palíndrom: {isPalindrome}");

            }

        } while (input != "TENET");

    }

​

    static bool IsPalindrome(string str)

    {

        string cleaned = str.Replace(" ", "").ToLower();

        char[] charArray = cleaned.ToCharArray();

        Array.Reverse(charArray);

        return cleaned == new string(charArray);

    }

}

​