using System;

public class Program

{

    public static void Main()

    {

        string s = "Smith";

        int startIndex = 1; //This is the first character that I want to output

        int endIndex = 3; //This is the last character that I want to output

        string subOfs = s.Substring(startIndex, endIndex);

        Console.WriteLine("Substring is '{0}'.", subOfs);

        Console.ReadLine();

    }

}