using System;

​

namespace Test

{

​

    public class Program

    {

        public static void Main()

        {

            Show("a","b","c");

        }

​

        public static void Show(string a)

        {

            Console.WriteLine(a);

        }

​

        public static void Show(string a, string b)

        {

            Console.WriteLine(a);

            Console.WriteLine(b);

        }

        public static void Show(string a, string b, string c)

        {

            Console.WriteLine(c);

        }

    }

}

​

​