using System;

public class Program

{

    public static void Main()

    {

        var a = "Hello!";

        var b = (" " + a).Trim();

        var areSameMessage =

                    "Objects 'a' and 'b' are "

                +   (System.Object.ReferenceEquals(a, b) ? "the same" : "different")

                +   " objects."

            ;

        var areEqualMessage =

                    "Objects 'a' and 'b' are "

                +   (a.Equals(b) ? "equal" : "not-equal")

                +   " objects."

            ;

        Console.WriteLine("a:\t\"" + a + "\"");

        Console.WriteLine("b:\t\"" + b + "\"");

        Console.WriteLine(areSameMessage);

        Console.WriteLine(areEqualMessage);

    }

}