SwapVariables

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SwapVariables
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string name = "Samoylov";
            string surname = "Dmitry";

            Console.WriteLine($"{name} {surname}");

            (name, surname) = (surname, name);
            Console.WriteLine($"{name} {surname}");
        }
    }
}