using System;

public class Program

{

    public static void Main()

    {

/*

Read two strings from the user and compare them. The comparison should ignore a) leading spaces, b) case, and c) trailing spaces. Thus, “ hello World” is equal to “hello wORLD          ”.

Show “Equal” if the two strings are equal; “Not Equal” otherwise.

Number of spaces between words matter.

*/

        string s1, s2;

        Console.WriteLine("First String: ");

        s1 = Console.ReadLine();

        Console.WriteLine("Second String: ");

        s2 = Console.ReadLine();

        if (s1.ToLower().Trim() == s2.ToLower().Trim())

            Console.WriteLine("Strings are EQUAL");

        else

            Console.WriteLine("Strings are NOT EQUAL"); 

​

/*

    Create a string “Celebrating 200 year of Indiana University”

Insert “s” after “year”.

You must use Insert and IndexOf to complete this question.

Print out the updated string.

*/

        string s3 = "Celebrating 200 year of Indiana University";

        int i = s3.IndexOf("year")+4;

        s3 = s3.Insert(i, "s");

        Console.WriteLine(s3);

        }

}