using System;

public class Program

{

    public static void Main()

    {

        double K, C;

        Temperatura T = new Temperatura();

        Console.WriteLine("Programa que Convierte de Kelvin a Celsius");

        Console.WriteLine("Ingrese los Kelvin");

        C = double.Parse(Console.ReadLine());

        K = T.CalcularC(C);

        Console.WriteLine("Los Celsius son: " + K);

    }

    public class Temperatura

    {

        private double C;

        public double CalcularC (double K)

        {

            C = K - 273.15;

            return C;

        }

    }

}

​