using System;

public class Program

{

    public static void Main(string[] args)

    {

        /* int summa = subtrahera(3, 4);

        Console.WriteLine(summa);

        Console.ReadLine();

    }

    public static int subtrahera(int siffra1, int siffra2) {

        return siffra1 - siffra2 ;  

        int summa = Addera(187.4, 45, 12);

        Console.WriteLine(summa);

        Console.ReadLine();

    }

    public static int Addera(int siffra1, int siffra2, int siffra3)  {

        return siffra1 + siffra2 + siffra3;

    */

        PrintDottedLine();

        Console.WriteLine("hello world");

        PrintDottedLine();

        Console.ReadLine();

    }

    public static void PrintDottedLine() {

        string result = new String('-', 15); // ........

        Console.WriteLine(result);

    }

}