Aplikasi C# Penjualan Flasdisk

Aplikasi C# (C Sharp) Penjualan flasdisk berbasis console

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Menu
{
    class Program
    {
        static void Main(string[] args)
        {
            string fd,wr,ex;

            a:
            Console.Clear();

            Console.Write("Pilih Merk Flasdisk Kingston/Hp/Sandisk [K/H/S] : ");
            fd = Console.ReadLine();

            if (fd == "K" || fd == "k")
            {

                Console.Write("-----------Anda memilih Kingston-----------");
                Console.Write("\n\nPilih Kapasitas [4/8/16] : ");
                wr = Console.ReadLine();

                if (wr == "4" || wr == "4")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 4GB-----------");
                    Console.Write("\n---->Harga  Rp. 40.000");
                }
                else if (wr == "8" || wr == "8")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 8GB-----------");
                    Console.Write("\n---->Harga Rp. 80.000");
                }
                else if (wr == "16" || wr == "16")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 16GB-----------");
                    Console.Write("\n---->Harga Rp. 160.000");
                }
                else
                {
                    Console.Write("Inputan Error");
                }

            }
            else if (fd == "H" || fd == "h")
            {

                Console.Write("-----------Anda memilih HP----------");
                Console.Write("\n\nPilih Kapasitas [4/8/16] : ");
                wr = Console.ReadLine();

                if (wr == "4" || wr == "4")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 4GB-----------");
                    Console.Write("\nHarga Rp. 45.000");
                }
                else if (wr == "8" || wr == "8")
                {
                   
                    Console.Write("-----------Anda memilih dengan Kapasitas 8GB-----------");
                    Console.Write("\nHarga  Rp. 85.000");
                }
                else if (wr == "16" || wr == "16")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 16GB-----------");
                    Console.Write("\nHarga Rp. 165.000");
                }
                else
                {
                    Console.Write("Inputan Error");
                }
            }
            else if (fd == "S" || fd == "s")
            {

                Console.Write("-----------Anda memilih Sandisk-----------");
                Console.Write("\n\nPilih Kapasitas [4/8/16] : ");
                wr = Console.ReadLine();

                if (wr == "4" || wr == "4")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 4GB-----------");
                    Console.Write("\nHarga Rp. 50.000");
                }
                else if (wr == "8" || wr == "8")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 8GB-----------");
                    Console.Write("\nHarga  Rp. 90.000");
                }
                else if (wr == "16" || wr == "16")
                {
                    Console.Write("-----------Anda memilih dengan Kapasitas 16GB-----------");
                    Console.Write("\nHarga  Rp. 170.000");
                }
                else
                {
                    Console.Write("Inputan Error");
                }
            }
            else
            {
                Console.Write("Inputan Error");
            }

            Console.Write("\n---------------------------------------------");
            Console.Write("\n\nAnda mau pesan lagi ? [Y/T] : ");
            ex = Console.ReadLine();

            if (ex =="Y" || ex =="y")
            {
                goto a;
            }



            Console.Read();
        }
    }
}