using System;

public class Program

{

    public static void Main(string[] args) 

    { 

        string s1 = null; 

        // for null value always return true 

        bool b1 = String.IsNullOrEmpty(s1); 

        Console.WriteLine(b1); 

        string s2 = " "; 

        // for whitespace value always return true 

        bool b2 = String.IsNullOrEmpty(s2); 

        Console.WriteLine(b2); 

        string s4 = " \n "; 

        // for new line value return true 

        bool b4 = String.IsNullOrEmpty(s4); 

        Console.WriteLine(b4); 

        string s5 = "\t"; 

        // for tab value return true 

        bool b5 = String.IsNullOrEmpty(s5); 

        Console.WriteLine(b5); 

        string s6 = "\r"; 

        // for carriage Return value return true 

        bool b6 = String.IsNullOrEmpty(s6); 

        Console.WriteLine(b6); 

        string s7 = "GFG"; 

        // for s7 it return False 

        bool b7 = String.IsNullOrEmpty(s7); 

        Console.WriteLine(b7); 

        string s8 = ""; 

        // for s8 it return False 

        bool b8 = String.IsNullOrEmpty(s8); 

        Console.WriteLine(b8); 

    } 

}