Question

using C# language

This program will demonstrate inheritance. Your Pizza Shop expands and now handles delivery orders and sit down orders in a restaurant setting. There are differences in a SeatedPizzaOrder and a DeliveryPizzaOrder. These are more specialized versions of the PizzaOrders you have been creating all along and you decide to write a program that handles them the same as much as possible and reuses the code of a general PizzaOrder class as much as possible to demonstrate inheritance.

Create a PizzaOrder Class. This class should have the following properties (and their underlying protected variables): Size {of type int}, Toppings {of type String}, Price {of type Decimal}. Make a full constructor for the class that takes all three values, and a default constructor that initializes the basic pizza as a 12 inch cheese pizza for $8. Make sure to include validation in your Size and Price properties and constructor to prevent a change to Size that would be less than 12 or greater than 16, and prevent a change to Price that would be less than 0.

Create a class that inherits from your PizzaOrder class called SeatedPizzaOrder. SeatedPizzaOrder has the three data values that any PizzaOrder has (size, toppings, and price) but also has a tablenumber (of type integer) and serverName (of type string) which allows you to track where the pizza is going and who took the order in the restaurant

Create a class that inherits from your PizzaOrder class called DeliveryPizzaOrder. DeliveryPizzaOrder has the three data values that any PizzaOrder has (size, toppings, and price) but also has a driverName (of type string) which allows you to track who is delivering the pizza.

The main() for this program should allow the user to enter in the values for a SeatedPizzaOrder and the values for a DeliveryPizzaOrder, and after creating an object of each one, it should displays their values (from the created objects) for the user.

Answer 1

Code:

class PizzaOrder
{
protected int size;
private decimal price;
protected string toppings;

public int Size
{
get { return size; }
set
{
if (value < 12 || value > 16)
return;
size = value;
}
}

public decimal Price
{
get { return price; }
set
{
if (value < 0)
return;
price = value;
}
}

public string Toppings
{
get { return toppings; }
set { toppings = value; }
}

public PizzaOrder()
{
price = 8;
size = 12;
toppings = "Cheese";
}

public PizzaOrder(string topp,int siz,decimal prce)
{
toppings = topp;
Size = siz;
Price = prce;
}

public override string ToString()
{
return "Price : $" + price + " Size : " + size + " Toppings : " + toppings;
}
}

class SeatedPizzaOrder : PizzaOrder
{
private int tableNo;

public int TableNumber
{
get { return tableNo; }
set { tableNo = value; }
}

private string serverName;

public string ServerName
{
get { return serverName; }
set { serverName = value; }
}

public SeatedPizzaOrder(string topp, int siz, decimal prce,int table, string serverN):base(topp,siz,prce)
{
tableNo = table;
serverName = serverN;
}

public override string ToString()
{
return base.ToString() + " Table Number : " + tableNo + " Server Name : " + serverName;
}
}

class DeliveryPizzaOrder : PizzaOrder
{
private string driverName;

public string DriverName
{
get { return driverName; }
set { driverName = value; }
}

public DeliveryPizzaOrder(string topp, int siz, decimal prce, string driverN) : base(topp, siz, prce)
{
driverName = driverN;
}

public override string ToString()
{
return base.ToString() + " Driver Name : " + driverName;
}
}

class Pizza
{
public static void Main()
{
Console.WriteLine("Enter the details for Seated Pizza Order");
Console.WriteLine("Enter the toppings : ");
string toppings = Console.ReadLine();
Console.WriteLine("Enter the size :");
int size = Int32.Parse(Console.ReadLine());
Console.WriteLine("Enter the Price : ");
decimal price = Decimal.Parse(Console.ReadLine());
Console.WriteLine("Enter the table number : ");
int tbleNo = Int32.Parse(Console.ReadLine());
Console.WriteLine("Enter the Server Name : ");
string serverName = Console.ReadLine();
SeatedPizzaOrder seaterPizzaOrder = new SeatedPizzaOrder(toppings, size, price, tbleNo, serverName);

Console.WriteLine("Enter the details for Delivery Pizza Order");
Console.WriteLine("Enter the delivery person name : ");
string person = Console.ReadLine();
DeliveryPizzaOrder deliveryPizzaOrder = new DeliveryPizzaOrder(toppings, size, price,person);

Console.WriteLine("Details for Seated Pizza Order : ");
Console.WriteLine(seaterPizzaOrder);
Console.WriteLine("Details for Delivery Pizza Order : ");
Console.WriteLine(deliveryPizzaOrder);

}
}

OUTPUT: