INLAB 7

Q.Lally Publication House publishes two types of learning material, viz., books and recorded CDs.  Both the books and CDs have ISBN number, Title, Author, Year of publication and Price. In addition to this, books contain the total number of pages and CDs or DVDs contain duration of the video,  in minutes. Provide a function to get and print details. Also provide a function:  calculate_Price which calculates  the  price of the books based on the total number of pages, Re 1 per page and the price of CDs/DVDs  based on the  duration of the CD/DVD, Rs 2 per minute of the duration. Design an OOP model and implement it using C++. (Hierarchical inheritance)

Input Format

Type of learning  material (0 for book and 1 for CD/DVD)

ISBN number

Title

Author

Year of publication

Number of pages if book, and the duration in minutes if CD/DVD

Output format

isbn number of book/cd

title of book/cd

price of book/cd

Solution

class CD:public learning_Material
{
public:
int dur;
void get();
void print();
void calc_Price();
};

class book:public learning_Material
{
public:
int pages;
void get();
void print();
void calc_Price();
};
void book::calc_Price()
{
price=pages;
}
void CD::calc_Price()
{
price=2*dur;
}
void book::print()
{
cout<<isbn<<endl<<title<<endl<<price; } void learning_Material::get() { cin>>isbn>>title>>author>>year;
}
void book::get()
{
learning_Material::get();
cin>>pages;
}
void CD::get()
{
learning_Material::get();
cin>>dur;
}
void CD::print()
{
cout<<isbn<<endl<<title<<endl<<price;
}