Writing to the console

Console.WriteLine prints its argument and moves to a new line. Console.Write prints without the line break.

using System;

class Program
{
    static void Main()
    {
        Console.Write("one ");
        Console.Write("two ");
        Console.WriteLine("three");
        Console.WriteLine("next line");
    }
}

one two three
next line

Both are methods on the Console class. The dot means «the WriteLine that belongs to Console» — you will see that pattern everywhere in C#.