użycie using System. Text;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {

        static void Main(string[] args)
        {

            {

                FunWithStringBuilder();
            }


            {

                static void FunWithStringBuilder()
                Console.WriteLine("=>Using the StringBuilder:");
                StringBuilder sb = new StringBuilder("*** Fantastic Games***");
                sb.Append("\n");
                sb.AppendLine("Half Life");
                sb.AppendLine("Beyond Good and Evil");
                sb.AppendLine("Deus Ex 2");
                sb.AppendLine("System Shock");
                Console.WriteLine(sb.ToString());

                sb.Replace("2", "Invisible War");
                Console.WriteLine(sb.ToString());
                Console.WriteLine("sb has {0} chars.", sb.Length);
                Console.WriteLine();


            }
        }
    }
}