using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine();

        int option=0;

        double t, p;

        double sum=0;

        while(option<5)

        {

            Console.Clear();

            Console.WriteLine("By Brandon Eduardo Cortes Correa");

            Console.WriteLine("");

            Console.WriteLine("Origin: 1.National 2.American 3.Asia 4.Europe 5.Exit");

            Console.WriteLine("Select the option: ");

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

            switch(option)

            {

                case 1:     

                    Console.WriteLine("Enter the price of the product");

                    p=Convert.ToDouble(Console.ReadLine());

                    t= p+(p*.08);

                    sum += t;

                    Console.WriteLine("The total is: ${0}",sum);

                    break;

                case 2:

                    Console.WriteLine("Enter the price of the product");

                    p=Convert.ToDouble(Console.ReadLine());

                    t= p+(p*.16);

                    sum += t;

                    Console.WriteLine("The total is: ${0}",sum);

                    break;

                case 3:

                    Console.WriteLine("Enter the price of the product");

                    p=Convert.ToDouble(Console.ReadLine());

                    t= p+(p*.33);

                    sum += t;

                    Console.WriteLine("The total is: ${0}",sum);

                    break;

                case 4:

                    Console.WriteLine("Enter the price of the product");

                    p=Convert.ToDouble(Console.ReadLine());

                    t= p+(p*.22);

                    sum += t;

                    Console.WriteLine("The total is: ${0}",sum);

                    break;

            }

​

        }

    }

}