Array/ Task 12 - Alphabet

using System;
class Alphabet
{
    static void Main()
    {
        int[] alpha = new int[26];
        for (int index = 0; index < alpha.Length; index++)
        {
            alpha[index] = 'a' + index;
        }
        Console.Write("Write a word: ");
        string word = Console.ReadLine();
        for (int letters = 0; letters < word.Length; letters++)
        {
            for (int index = 0; index < alpha.Length; index++)
            {
                if (word[letters]==alpha[index])
                {
                    Console.Write(index+ " ");
                    break;
                }
            }
        }
    }
}