Question

C# programming

50 pts Question 2:2 1- Create the base class Book that has the following instance variables, constructor, and methods title (String) isbn (String) authors (String) publisher (String) edition ( int) published year (int) Constructor that takes all of the above variables as input parameters. set/get methods ToString method// that return sting representation of Book object. 2-Create the sub class New_Book that is derived from the base class Book and has the following instance variables, constructor, and methods: title (String isbn (String) authors (String) publisher (String) edition (int) published year (int) price (double) Constructor that takes all of the above variables as input parameters set/get methods calculate.price// returns the price of the book as listed in the price variable. ToString method//that return sting representation of New Book object. Constructor that takes all of the above variables as input parameters set/get methods calculate price//returns the price of the book as listed in the price variable. ToString method// that return sting representation of New Book object. 3- Create the sub class Used. Book that is derived from the base class Book and has the following instance variables title (String) isbn (String) authors (String) publisher (String) edition (int) published year (int) price new (double)// the price of the book if it is new age (int) I/ how old the book is in years Constructor that takes all of the above variables as input parameters set/get methods calculate_price method// the price is calculated as price.new (1-0.15 age) ToString method 4-Create the Testing class that has the main method and does the following: a- Use the constructor to create object of New_Book class named newbook (you can choose the values of input parameters of the constructor). Call compute_price method. b- Use the constructor to create object of Used_Book class named usedbook (you can choose the values of input parameters of the constructor)..Call compute price method c- Print out the related information of newbook and usedbook objects. Upload Choose a File

Answer 1

C# Program:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace New_Old_Books
{
//Base Class
public class Book
{
private string title;

public string Title
{
get { return title; }
set { title = value; }
}
private string isbn;

public string Isbn
{
get { return isbn; }
set { isbn = value; }
}
private string authors;

public string Authors
{
get { return authors; }
set { authors = value; }
}

private string publisher;

public string Publisher
{
get { return publisher; }
set { publisher = value; }
}

private int edition;

public int Edition
{
get { return edition; }
set { edition = value; }
}

private int published_year;

public int Published_year
{
get { return published_year; }
set { published_year = value; }
}

//Constructor
public Book(string t, string i, string a, int e, int p, string pub)
{
this.title = t;
this.isbn = i;
this.authors = a;
this.edition = e;
this.published_year = p;
this.publisher = pub;
}

//Tostring method
public override string ToString()
{
return "\n\n\n Title: " + title + "\n ISBN: " + isbn + "\n Authors: " + authors + "\n Publisher: " + publisher + "\n Edition: " + edition + "\n Published Year: " + published_year;
}
}

//Child class
public class New_Book : Book
{
private double price;

public double Price
{
get { return price; }
set { price = value; }
}

//Constructor
public New_Book(string t, string i, string a, string pub, int e, int p, double pr) : base(t, i, a, e, p, pub)
{
price = pr;
}

//Tostring method
public override string ToString()
{
return base.ToString() + "\n Price: " + calculate_price();
}

//Price calculation
public double calculate_price()
{
return this.price;
}
}

//Child class 2
public class Used_Book : Book
{
private double price_new;

public double Price_new
{
get { return price_new; }
set { price_new = value; }
}

private int age;

public int Age
{
get { return age; }
set { age = value; }
}

//Constructor
public Used_Book(string t, string i, string a, string pub, int e, int p, double pr, int age) : base(t, i, a, e, p, pub)
{
this.price_new = pr;
this.age = age;
}

//Tostring method
public override string ToString()
{
return base.ToString() + "\n Price: " + calculate_price() + "\n Age: " + age + " years. \n";
}

//Price calculation
public double calculate_price()
{
return (price_new*(1-(0.15*age)));
}
}

class Program
{
static void Main(string[] args)
{
//Creating objects
New_Book nb = new New_Book("C Sharp", "ISBN:5646", "Mary", "Himalaya", 2, 2014, 65.25);
Console.WriteLine(nb);

Used_Book ub = new Used_Book("VB.Net", "ISBN:8949", "Kary", "Maruthi", 5, 2001, 14.25, 5);
Console.WriteLine(ub);

Console.Read();
}
}
}
_______________________________________________________________________________________________________

Sample Run:

file:///C:/Users/SaiBabu/documents/visual studio 2010/Projects/New Old_Boc Title: C Sharp ISBN ISBN:5646 Authors: Mary Publisher: Himalaya Edition: 2 Published Year: 2014 Price: 65.25 Title: UB.Net ISBN: ISBN:8949 Authors Kary Publisher: Maruthi Edition:5 Published Year: 2001 Price: 3.5625 Age: 5 years