Answered: Microsoft Visual C# 7th edition.…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Microsoft Visual C# 7th edition.

Instruction: Write an application for Nina’s Cookie Emporium named CookieDemo that declares and demonstrates objects of the CookieOrder class and its descendants. The CookieOrder class includes the following auto-implemented properties:

OrderNum - The order number
Name - The recipient’s name
CookieType - The cookie type (for example, chocolate chip)

The class should also include fields for number of dozens ordered and price (named Dozens and Price). When the field value for number of dozens ordered is set, the price field is set as $15 per dozen for the first two dozen and $13 per dozen for each dozen over two.

Next, create a child class named SpecialCookieOrder, which includes a field with a description as to why the order is special (for example, gluten-free). Override the method that sets a CookieOrder’s price as described in the step above, but also to include special handling, which is $10 for orders up to $40 and $8 for higher-priced orders.

An example of the program is shown below:

Order #101 Arthur type: gluten-free chocolate chip 1 dozen --- $25 Order #102 Brown type: sugar-free peanut butter 2 dozen --- $40 Order #103 Cooper type: iced sugar 3 dozen --- $51

Here is my code. It gives me an infinite loop.

using static System.Console;

class CookieDemo2

{

static void Main()

{

// Your code here

CookieOrder cookieOrder = new CookieOrder();

cookieOrder.OrderNum = "101";

cookieOrder.Name = "Arthur";

cookieOrder.CookieType = "chocolate chip";

cookieOrder.Dozens = 1;

SpecialCookieOrder specialCookieOrder= new SpecialCookieOrder();

specialCookieOrder.OrderNum="101";

specialCookieOrder.Name = "Arthur";

specialCookieOrder.CookieType = "chocolate chip";

specialCookieOrder.specialType = "gluten-free";

specialCookieOrder.Dozens= 1;

WriteLine("Order # {0}{1, 4}",cookieOrder.OrderNum,cookieOrder.Name);

WriteLine("Order # {0}{1, 4}",specialCookieOrder.OrderNum,specialCookieOrder.Name);

WriteLine("type: {0} {1}",specialCookieOrder.specialType,cookieOrder.CookieType);

WriteLine(cookieOrder.OrderNum + "--- $" + cookieOrder.Price);

}

}//end CookieDemo2

class CookieOrder

{

public string OrderNum {get; set;}

public string Name {get; set;}

public string CookieType {get; set;}

private int dozens;

protected int price;

//this.price=price;

//this.dozens=dozens;

public int Dozens

{

get {return dozens;}

set {dozens = value;}

}

public virtual int Price

{

get {return Price;}

set

{

if(Dozens <= 2)

Price = Dozens * 15;

else

if(Dozens > 2)

Price = Dozens * 13;

}

}//end class CookieOrder

class SpecialCookieOrder : CookieOrder

{

public string specialType;

public override int Price

{

get{return base.Price;}

set {

if(base.Price < 40)

base.Price = price;

else

if(base.Price <= 40)

price = price + 10;

else

if(price > 40)

price = price + 8;

}

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