task 5

using System;

public class Program
{

    public static void Main(string[] args)
    {
        string name = "Sivachoff";
        string surname = "Valentine";

        Console.WriteLine("Your name and surname is " + name + " " + surname);

        string swapValue = name;
        name = surname;
        surname = swapValue;

        Console.WriteLine("Your name and surname is " + name + " " + surname);
    }

}