using System;

public class Program

{

    public static void Main()

    {

        OutputManager manager = new OutputManager();

        Console.WriteLine(manager.SayHi("Bob"));

        Console.WriteLine(manager.SayHi("Alice"));

        Console.WriteLine(manager.SayHi("X"));

    }

}

​

public class OutputManager

{

    // Strings Exercise 1: Say Hello

    public string SayHi(string name)

    {

        return string.Format("Hello {0}!", name);

    }

}