using System;

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class Shoes

{

        public string category;

        public int size;

        public string color;

        public double price;        

        public Shoes()

        {

​

        }

​

        public Shoes(string category, int size, string color, double price)

        {

            this.category = category;

            this.size = size;

            this.color = color;

            this.price = price;            

​

        }

        public void GetDetails() 

        {

            Console.WriteLine("category=" + this.category + " size=" + this.size + " price=" + this.price + "color: " +this.color + "\n");

        }

        public double PriceAfterSale()

        {

            double sale=0.2;  

            double newPrice = (1-sale)*this.price;  

            return(newPrice);

        }

}   

public class Program

{

    public static void Main()

    {

        Shoes sh1 = new Shoes("walking", 37, "white", 300);

        Shoes sh2 = new Shoes("running", 38, "blue", 200);

        Shoes sh3 = new Shoes("elegant", 36, "black", 250);

        Shoes sh4 = new Shoes("dancing", 40, "pink",1000);

        Shoes sh5 = new Shoes("causal", 39, "yellow", 450);

        sh1.GetDetails();

        Console.WriteLine("sh1 after sale is: " + sh1.PriceAfterSale());

        sh2.GetDetails();

        Console.WriteLine("sh2 after sale is: " +sh2.PriceAfterSale());

        sh3.GetDetails();

        Console.WriteLine("sh3 after sale is: " + sh3.PriceAfterSale());

        sh4.GetDetails();

        Console.WriteLine("sh4 after sale is: " + sh4.PriceAfterSale());

        sh5.GetDetails();

        Console.WriteLine("sh5 after sale is: " + sh5.PriceAfterSale());

    }

}

​