06.AsociativeArrays-Count Chars in a String

06. Count Chars in a String
Write a program that counts all characters in a string except for space (' ').
Print all the occurrences in the following format:
{char} -> {occurrences}
Examples
Input             Output
text              t -> 2
                  e -> 1
                  x -> 1
text text text
                  t -> 6
                  e -> 3
                  x -> 3

using System;
using System.Collections.Generic;

namespace _01CountCharsInA_String
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.ReadLine().Split();
            var countChars = new Dictionary<char, int>();

            for (int word = 0; word <= input.Length - 1; word++)
            {
                var text = input[word];
                for (int letter = 0; letter <= text.Length - 1; letter++)
                {
                    if (countChars.ContainsKey(text[letter]))
                    {
                        countChars[text[letter]]++;
                    }
                    else
                    {
                        countChars.Add(text[letter], 1);
                    }
                }
            }
            foreach (var item in countChars)
            {
                Console.WriteLine($"{item.Key} -> {item.Value}");
            }
        }
    }
}