Basic of programming. Lesson#5. Rearrangement

internal class Program
{
    static void Main(string[] args)
    {
        string name = "Tyson";
        string surname = "Mike";
        string? tempName;

        Console.WriteLine(name + " " + surname);

        tempName = surname;
        surname = name;
        name = tempName;

        Console.WriteLine(name + " " + surname);
    }
}