using System;

public class Program

{

    public static void Main()

    {

        {//start of main

            start:

            Console.WriteLine("How old are you?");

            short age = short.Parse(Console.ReadLine());

            Console.WriteLine("In 10 years, you will be: " + (age + 10));

            Console.WriteLine(age);

            Console.WriteLine("Would you like to run the program again? y/n");

            string choice = Console.ReadLine();

            if (choice == "y" || choice == "Y")

            {

                Console.Clear();

                goto start;

            }

        }//end of the main

​

    }

}