using System;

public class Program

{

    public static void Main()

    {

        int conteo = 0;

        string nombre = "Alejandro";

        int b = 2;

        while(conteo < 10){

            Console.WriteLine("Hello World " + conteo);

            conteo++;

        }

        for (int a = 0; a <= 10; a++){

            Console.WriteLine("Hello World " + a);  

        }

        string[] weekDays2 = { "Domingo", "Lunes", "Martes", "Miercoles", "Jueves", "Viernes", "Sabado" };

        Console.WriteLine(weekDays2[0]);

        string[] arr = new string[] {};

        Console.WriteLine(nombre.Length);

        //Console.WriteLine(calculo( a + b ));

    }

    public static int calculo (int a, int b){

        return a + b;

    }

    public static void calculo2 (int a, int b){ 

         Console.WriteLine(a + b);

    }

​

}