using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace Cashier_Application

{

    public abstract class Item

    {

        protected string item_name;

        protected double item_price;

        protected int item_quantity;

        private double total_price;

​

        public Item(string name, double price, int quantity)

        {

            this.item_name = name;

            this.item_price = price;

            this.item_quantity = quantity;

        }

        public double getTotalPrice()

        {

            total_price = item_quantity * total_price;

            return this.total_price;

        }

        public void setPayment(double amount)

        {

        }

​

    }

    public class DiscountedItem : Item

    {

        protected string item_name;

        private double item_discount;

        private int discounted_price;

        private int payment_amount;

        private double change;

​

        public DiscountedItem(string name, double price, int quantity, double discount) : base(name,price,quantity)

        {

            this.item_name = name;

            this.item_price = price;

            this.item_quantity = quantity;

            this.item_discount = discount;

​

        }

        public double getTotalPrice()

        {

            return this.discounted_price;

        }

        public void setPayment(double amount)

        {

        }

        public double getChange()

        {

            return this.change;

        }

    }

    public class Program

    {

        public static void Main(string[] args)

        {

            String a = "Wireless Gaming Mouse";

            String b = "Tablet Galaxy Tab";

            String c = "5G Tablet Snapdragon";

            String d = "";

            double price = 0;

​

            Console.Write("Enter Item :");

            String item_name = Console.ReadLine();

            Console.Write("Enter Quantity :");

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

​

            if (item_name.Equals(a))

            {

                price= 799.50;

            }

            else if (item_name.Equals(b))

            {

                price = 2500.00;

            }

            else if (item_name.Equals(c))

            {

                price = 6888.00;

            }

            decimal discount = 0;

​

            if(item_quantity >= 6)

            {

                discount = Convert.ToDecimal(0.32);

            }

            else if(item_quantity >= 3)

            {

                discount = Convert.ToDecimal(0.27);

            }

            else if (item_quantity < 3)

            {

                discount = Convert.ToDecimal(0.00);

            }

            int discountprice = 0;

            discountprice = Convert.ToInt32(discount) * Convert.ToInt32(price);

            int totalprice = 0;

            totalprice = Convert.ToInt32(price) - discountprice ;

​

            Console.WriteLine("Discount: {0}" ,discount);

            Console.WriteLine("Price: {0}",price );

            Console.WriteLine("Total Price: {0}",totalprice);

            Console.Write("Payment Recieved: ");

            double payment = Convert.ToDouble(Console.ReadLine());

            double change = payment - totalprice;

            Console.WriteLine("Change: {0}", change);

​

        }

    }

}

​

​