using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        // 1 - Constructor Signature: StringBuilder();

        StringBuilder sb1 = new StringBuilder(); 

        // 2 - Constructor Signature: StringBuilder(string value);

        string myString = "Hi, Pirzada";

        StringBuilder sb2 = new StringBuilder(myString);

        // OR

        StringBuilder sb3 = new StringBuilder("Hi, Pirzada");

        // 3 - Constructor Signature: StringBuilder(int capacity);

        StringBuilder sb4 = new StringBuilder(7);

        // Constructor Signature: StringBuilder(string value, int capacity); 

        StringBuilder sb5 = new StringBuilder("Hello", 7);

        // Once you are done with string manipulation, than call ToString method to convert StringBuilder object into a regular string.

        StringBuilder sb = new StringBuilder("Hi, Pirzada");

        string finalString = sb.ToString();

        Console.WriteLine(finalString);

​

​

​

​

​

    }

}