using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        // Method Signature: StringBuilder Append (string value);

        // The append method returns the StringBuilder object on which append is invoked. This means, you can chain calls to append to add more strings.

​

        StringBuilder sb = new StringBuilder(); 

        sb.Append("Hi, Mr");

        sb.Append(" Pirzada");

        Console.WriteLine(sb.ToString());

​

    }

}