Write the following Book class: A Book has-a title, ISBN number, author and pric
ID: 3587563 • Letter: W
Question
Write the following Book class: A Book has-a title, ISBN number, author and price.
Include the following:
• All instance fields (variables)
• Two Constructors: a default constructor and one requiring all fields as parameters
• Methods – an accessor and mutator for each instance fields
Include the following:
1. All instance fields (variables) included and of appropriate type.
2. Two constructors included and coded correctly: a no-args constructor and one requiring a parameter for each instance field. All fields initialized.
3. All methods (accessors and mutators)included and coded correctly.
Explanation / Answer
#include <iostream>
using namespace std;
class Book
{
//variables
private:
string title;
string ISBN;
string author;
double price;
public:
Book() //default constructor
{
title = " ";
ISBN = " ";
author = " ";
price = 0.0;
}
Book(string title,string ISBN,string author,double price) //argument constructor
{
this->title = title;
this->ISBN = ISBN;
this->author = author;
this->price = price;
}
//set and get methods for all variables
void setTitle(string title)
{
this->title = title;
}
string getTitle()
{
return title;
}
void setISBN(string ISBN)
{
this->ISBN = ISBN;
}
string getISBN()
{
return ISBN;
}
void setAuthor(string author)
{
this->author = author;
}
string getAuthor()
{
return author;
}
void setPrice(double price)
{
this->price = price;
}
double getPrice()
{
return price;
}
};
int main() {
//objects of class Book
Book b1("C++ Programming","1-23455-567","Bjarne Stroustrup",50.89);
cout<<"Book b1 :"<<b1.getTitle()<<" by "<<b1.getAuthor()<<" of price "<<b1.getPrice();
Book b2;
b2.setTitle("Java Testing and Design");
b2.setAuthor("Frank Cohen");
b2.setPrice(34.56);
cout<<" Book b2 :"<<b2.getTitle()<<" by "<<b2.getAuthor()<<" of price "<<b2.getPrice();
return 0;
}
Output:
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