using System;

public abstract class Pizza { 

    protected string pizzaName = "Uknown Pizza";

    public virtual void bake() { 

        Console.WriteLine("Baking..."); 

    }

    public string getPizzaName() { 

        return pizzaName;   

    }

}

​

public class NYStylePepperoniPizza : Pizza { 

    public NYStylePepperoniPizza() { 

        pizzaName = "Pepperoni Pizza NY Styles";    

    }

    public override void bake() { 

        Console.WriteLine("Baking for 30 mins extra margarin...");  

    }

}

​

public class ChiStylePepperoniPizza : Pizza { 

    public ChiStylePepperoniPizza() { 

        pizzaName = "Pepperoni Pizza CHI Styles";   

    }

    public override void bake() { 

        Console.WriteLine("Baking for 10 mins with extra chicago pepper...");   

    }

}

​

public class NYStyleCheesePizza : Pizza { 

    public NYStyleCheesePizza() { 

        pizzaName = "Cheese Pizza NY Style";    

    }

    public override void bake() { 

        Console.WriteLine("Baking for 20 mins Mozza all over NY Places...");    

    }

}

​

public class CHIStyleCheesePizza : Pizza { 

    public CHIStyleCheesePizza() { 

        pizzaName = "Cheese Pizza CHI Style";   

    }

    public override void bake() { 

        Console.WriteLine("Baking for 20 mins with mallored cheese for Bulls...");  

    }

}

​

public abstract class PizzaStore { 

    public void orderPizza(string type) { 

        Pizza pizza;

        pizza = createPizza(type);

        Console.WriteLine("Ordering " + pizza.getPizzaName());

        pizza.bake();

    }

    public abstract Pizza createPizza(string type); 

}

​

public class NYPizzaStore : PizzaStore { 

    public override Pizza createPizza(string type) { 

        if(type == "cheese") { 

            return new NYStyleCheesePizza();    

        }else if(type == "pepperoni") { 

            return new NYStylePepperoniPizza(); 

        }

        return null;

    }

}

​

public class CHIPizzaStore : PizzaStore { 

    public override Pizza createPizza(string type) { 

        if(type == "cheese") { 

            return new CHIStyleCheesePizza();   

        }else if(type == "pepperoni") { 

            return new ChiStylePepperoniPizza();    

        }

        return null;

    }

}

​

​

​

public class Program

{

    public static void Main()

    {

        PizzaStore ChicagoPizzaStore = new CHIPizzaStore();

        PizzaStore NewYorkPizzaStore = new NYPizzaStore();

        ChicagoPizzaStore.orderPizza("cheese");

        Console.WriteLine("");

        NewYorkPizzaStore.orderPizza("cheese");

        Console.WriteLine("");

        ChicagoPizzaStore.orderPizza("pepperoni");

        Console.WriteLine("");

        NewYorkPizzaStore.orderPizza("pepperoni");

        Console.WriteLine("");

    }

}