using System;

public class Program

{

    public static void Main()

    {

         //Q1

        string FirstString = "";

        string SecondString = "";

​

        Console.WriteLine("Please enter first string:");

        FirstString = Console.ReadLine();

​

        Console.WriteLine("Please enter second string:");

        SecondString = Console.ReadLine();

​

        FirstString = FirstString.ToLower().Trim();

        SecondString = SecondString.ToLower().Trim();

​

        if (FirstString == SecondString)

            Console.WriteLine("Equal");

        else

            Console.WriteLine("Not Equal");

        Console.WriteLine("===================");

        //Q2

        string strInfo = "Celebrating 200 year of Indiana University";

        strInfo = strInfo.Insert(strInfo.IndexOf("year")+"year".Length,"s");

        Console.WriteLine(strInfo);

    }

}