#using System;
 
namespace ConsoleApplication11
{
    class Program
    {
        static void Main(string[] args)
        {
            int total_price = 0, free_donut = 0;
            string name;
            string offer_text = "";
            int qty;
            int price_per_donut = 15;
 
            Console.WriteLine("=======================================================");
            Console.WriteLine("               Mini Donut Shop 8                        ");
            Console.WriteLine("=======================================================");
 
            Console.Write("Please enter your name: ");
            name = Console.ReadLine();
 
            Console.Write("Please enter donut quantity: ");
            qty = int.Parse(Console.ReadLine());
 
            switch (qty)
            {
                case >= 12:
                    price_per_donut = 10;
                    total_price = qty * price_per_donut;
                    offer_text = "Buy 12+ donuts - 5 Baht discount per piece applied";
                    break;
 
                case 7:
                    total_price = 105;
                    free_donut = 2;
                    offer_text = "Buy 7 get 2 free";
                    break;
 
                case 5:
                    total_price = 75;
                    free_donut = 1;
                    offer_text = "Buy 5 get 1 free";
                    break;
 
                default:
                    total_price = qty * price_per_donut;
                    offer_text = "No promotion applied";
                    break;
            }
 
            Console.WriteLine("=======================================================");
            Console.WriteLine($" Customer        : {name}");
            Console.WriteLine($" Quantity Bought : {qty}");
 
            if (free_donut > 0)
                Console.WriteLine($" Free Donut      : {free_donut}");
 
            Console.WriteLine($" Price per Donut : {price_per_donut} Baht");
            Console.WriteLine($" Total Price     : {total_price} Baht");
            Console.WriteLine($" Promotion       : {offer_text}");
            Console.WriteLine("=======================================================");
            Console.WriteLine(" Thank you for your order!");
        }
    }
}

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