using System;

public class Program

{

    public static void Main()

    {

        int controle;

        Console.WriteLine("Informe o valor máximo");

        controle = Convert.ToInt32(Console.ReadLine());     

        Console.WriteLine("Testando Loop com For");

        for(int cont = 1; cont <= controle; cont++){

        Console.WriteLine("Loop com for " + cont);      

        }       

        Console.WriteLine("________________________________________");

        Console.WriteLine("Testando Loop com While");

        while(controle > 0 ){

            Console.WriteLine("Loop com while " + controle);

            controle--;

        }       

        Console.WriteLine("________________________________________");      

        Console.WriteLine("Testando Loop com Do while");

        do{

            Console.WriteLine("Loop com Do + while " + controle);

            controle++;         

        }

        while(controle <=20);   

    }

}