using System;

public class Program

{

    public static void Main()

    {

        //Question 2

        string sentence;

        Console.Write("Enter a sentence to replace 'no' with 'yes':");

        sentence = Console.ReadLine();

        string output = sentence.Replace("no", "yes");

        Console.WriteLine(output);

        //Question 3

        string name, Revname = "";

        Console.Write("\nEnter the first string : ");

        name = Console.ReadLine();

        Console.Write("Enter the second string : "); 

        Revname = Console.ReadLine();

        char[] separator = {' '};

        string [] first;

        first = name.Split(separator);

        //first = name.ToLower();

        string [] second;

        second = Revname.Split(separator);

        //second = Revname.ToLower();

        Console.WriteLine("Reverse  String  Is {0} and {1}",name, Revname);

        if (name.ToLower() == Revname.ToLower())

        {

            Console.WriteLine("Yes, these string are Equal!!");

            //Console.WriteLine("Reverse  String  Is {0} ", Revname);

        }

        else

        {

            Console.WriteLine("These string are Not Equal!!");

        }

    }

}