// See https://aka.ms/new-console-template for more information

Console.WriteLine("Hello, World!");

Console.ReadLine();

Action actionMessage = HelloMessage;

actionMessage();

while (true)

{

string? readLine = Console.ReadLine();

if (string.IsNullOrEmpty(readLine))

{

break;

}

Action<string> copyMessage = CopyMessage;

copyMessage(readLine);

copyMessage.Invoke(readLine);

}

Console.ReadLine();

actionMessage = GoodByeMessage;

// actionMessage();

actionMessage.Invoke();

Console.ReadLine();

void HelloMessage()

{

System.Console.WriteLine("Hello");

}

void GoodByeMessage()

{

System.Console.WriteLine("Good Bye");

}

void CopyMessage(string msg)

{

System.Console.WriteLine(msg);

}