using System;

public class Program

{

    public static void Main()

    {

        string multiLineString = @"Hello World!

        This string has multiple lines.

        This is line 3.";

        //Should print 3 lines in the console

        Console.WriteLine(multiLineString);

        string oneLineString = multiLineString.Replace("\r", "").Replace("\n", "");

        //Should only show 1 line in the console; 

        // all characters from the original string are concatenated on one line

        Console.Write(oneLineString);

    }

}