using System;

using System.Collections.Generic;

​

public class Kasir

{

    static void Main()

    {

        // Daftar Barang

        var makananList = new List<Barang>()

        {

            new Barang("pisang goreng", 2000),

            new Barang("naget goreng", 2000),

            new Barang("telur gulung goreng", 2000),

            new Barang("sosis goreng", 1000),

            new Barang("bakso bunga goreng", 2000),

            new Barang("Roti", 10000),

            new Barang("Kacang", 12000),

            new Barang("Biskuit", 8000),

            new Barang("Permen Kiss", 1000),

            new Barang("Silver Queen", 11000),

        };

        var nonMakananList = new List<Barang>()

        {

        };

        var barangList = new List<Barang>();

        barangList.AddRange(makananList);

        barangList.AddRange(nonMakananList);

        // Tampilkan daftar barang makanan

        Console.WriteLine("=============== Daftar Makanan ===============");

        Console.WriteLine("| No | Nama Barang                | Harga     |");

        Console.WriteLine("===============================================");

        for (int b = 0; b < makananList.Count; b++)

        {

            Console.WriteLine($"| {b + 1, 2} | {makananList[b].Nama, -25} | Rp{makananList[b].Harga, 7:N0} |");

        }

​

        Console.WriteLine("===============================================");

        // Tampilkan daftar barang non-makanan

        Console.WriteLine("\n============ Daftar Non-Makanan ==============");

        Console.WriteLine("| No | Nama Barang                | Harga     |");

        Console.WriteLine("===============================================");

        for (int b = 0; b < nonMakananList.Count; b++)

        {

            Console.WriteLine($"| {b + 1 + makananList.Count, 2} | {nonMakananList[b].Nama, -25} | Rp{nonMakananList[b].Harga, 7:N0} |");

        }

​

        Console.WriteLine("===============================================");

        // Input pembelian

        var pembelian = new List<Pembelian>();

        Console.Write("\nMasukkan jumlah barang yang ingin dibeli: ");

        int jumlahBarang = Convert.ToInt32(Console.ReadLine());

        for (int b = 0; b < jumlahBarang; b++)

        {

            Console.Write($"Masukkan nomor barang ke-{b + 1}: ");

            int nomorBarang = Convert.ToInt32(Console.ReadLine()) - 1;

            Console.Write($"Masukkan jumlah {barangList[nomorBarang].Nama}: ");

            int qty = Convert.ToInt32(Console.ReadLine());

            pembelian.Add(new Pembelian(barangList[nomorBarang], qty));

        }

​

        // Input member

        Console.Write("\nApakah Anda memiliki member? (ya/tidak): ");

        string memilikiMember = Console.ReadLine();

        bool isMember = memilikiMember.ToLower() == "ya";

        // Hitung total

        double total = 0;

        foreach (var item in pembelian)

        {

            total += item.Barang.Harga * item.Qty;

        }

​

        // Hitung diskon

        double diskon = 0;

        if (isMember)

        {

            diskon += total * 0.05; // diskon 5% untuk member

        }

​

        foreach (var item in pembelian)

        {

            if (item.Qty >= 5)

            {

                diskon += item.Barang.Harga * item.Qty * 0.2; // diskon 20% untuk pembelian 5 item atau lebih

            }

        }

​

        // Cetak struk

        Console.WriteLine("\n=========================================");

        Console.WriteLine("             PRAKTEK IBU MONA MANIS");

        Console.WriteLine("        SMK PEMATANG, SIANTAR");

        Console.WriteLine("=========================================");

        foreach (var item in pembelian)

        {

            Console.WriteLine($"{item.Barang.Nama} x {item.Qty} = Rp {(item.Barang.Harga * item.Qty):N0}");

        }

​

        Console.WriteLine("-----------------------------------------");

        Console.WriteLine($"Subtotal        : Rp {total:N0}");

        Console.WriteLine($"Diskon          : Rp {diskon:N0}");

        Console.WriteLine($"Total Bayar     : Rp {(total - diskon):N0}");

        Console.WriteLine($"Member          : {(isMember ? "Ya" : "Tidak")}");

        Console.WriteLine("=========================================");

        Console.WriteLine("      Terima Kasih Telah Berbelanja!");

        Console.WriteLine("        Semoga Harimu Menyenangkan");

        Console.WriteLine("=========================================");

    }

}

​

public class Barang

{

    public string Nama { get; set; }

    public double Harga { get; set; }

​

    public Barang(string nama, double harga)

    {

        Nama = nama;

        Harga = harga;

    }

}

​

public class Pembelian

{

    public Barang Barang { get; set; }

    public int Qty { get; set; }

​

    public Pembelian(Barang barang, int qty)

    {

        Barang = barang;

        Qty = qty;

    }

}