using System;

using System.Linq;

​

namespace SandboxCore

{

    class Program

    {

        static void Main(string[] args)

        {

            string str = "This is a test string. It has 44 characters.";

​

​

            foreach (int i in Enumerable.Range(0, str.Length / 10))

            {

                string result = str[(10 * i)..(10 * i + 10)];

                Console.WriteLine(result);

            }

        }

    }

}

​