Bài tập

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

namespace Cau_truc_dieu_khien
{
    class Program
    {
        static void Main(string[] args)
        {
            int hma = 10;
            int vip72 = 15;
            int sock5 = 10;
            string loai_acc = "";
            string tenkhachhang = "";
            int soluong = 0;
            int tongtien = 0;
            int tiengiam = 0;
            int tien = 0;
            int diemthuong = 0;
            Console.WriteLine("Ban mua mua Acc gi ? (Nhap vao hma, vip72, socks5)");
            loai_acc = Console.ReadLine();
            Console.WriteLine("Nhap ten cua ban: ");
            tenkhachhang = Console.ReadLine();
            Console.WriteLine("Nhap so luong acc ban muon mua: ");
            soluong = Convert.ToInt32(Console.ReadLine());
            switch (loai_acc)
            {
                case "hma":
                    tien = hma * soluong;
                    break;
                case "vip72":
                    tien = vip72 * soluong;
                    break;
                case "sock5":
                    tien = sock5 * soluong;
                    break;
                default:
                    Console.WriteLine("Vui long nhap vao hma, vip72, socks5");
                    break;
            }
            if (soluong > 0 && soluong <= 10)
            {
                tiengiam = tien * 1 / 10;
            }
            else if (soluong > 10 && soluong <= 20)
            {
                tiengiam = tien * 2 / 10;
            }
            else
            {
                tiengiam = tien * 3 / 10;
            }
            if (tiengiam >= 0 && tiengiam < 100)
            {
                diemthuong = diemthuong + 5;
            }
            else if (tiengiam >= 100 && tiengiam <= 200)
            {
                diemthuong = diemthuong + 10;
            }
            else if (tiengiam > 200 && tiengiam <= 300)
            {
                diemthuong = diemthuong + 20;
            }
            else
            {
                diemthuong = diemthuong + 30;
            }
            tongtien = Convert.ToInt32(tien - tiengiam);
            Console.WriteLine("==============Hoa Don Khach Hang==============");
            Console.WriteLine("Xin chao " + tenkhachhang);
            Console.WriteLine("Loai Acc: " + loai_acc);
            Console.WriteLine("So luong Acc ban muon mua la " + soluong + " Va ban duoc giam " + tiengiam + "$");
            Console.WriteLine("So tien ban phai tra la: " + tongtien + "$");
            Console.WriteLine("Ban duoc cong " + diemthuong + " diem vao tai khoan");
            Console.ReadLine();



        }
    }
}