oops_assignment_kanjan.cpp

/*

Group 4 (10,12,14,16)

A publishing company markets both book and CD versions of its works. Create a class
publication that stores the title ( type char *) and price (type float) of publication. From this
class derive two classes: book, which adds a page count (type int); and CD, which adds size
(type int). Each of these three classes should have a getdata() function to get its data from the
user, and a putdata() function to display its data.

Test the classes by creating an array of pointers to class Publication and filling it with objects
of both derived classes getting the data from the user. Display the details of the array using a
single function call in a loop.

*/

#include<iostream>
#include<cstring>

using namespace std;

class Book
{
	int page_count;

public:
	void getdata(){
		cout<<"Enter page count: ";
		cin>>page_count;
	}

	void putdata(){
		cout<<"PageCount: "<<page_count<<endl;
	}
};

class CD
{
	int size;

public:
	void getdata();

	void putdata(){
		cout<<"Size: "<<size<<endl;
	}
};

class Publication:Book,CD
{
	char* title;
	float price;

public:
	void getdata();
	void putdata();
};

void Publication::getdata(){
	char b_name[40];
	cout<<"Enter name & price of book: ";
	cin>>b_name;
	
	cin>>price;
	title = new char[strlen(b_name)];
	strcpy(title, b_name);

	Book::getdata();
	CD::getdata();
}

void CD::getdata(){
	cout<<"Enter size of CD: ";
	cin>>size;
}

void Publication :: putdata(){
	cout<<"Title: "<<title<<" Price: "<<price<<" ";
	Book::putdata();
	CD::putdata();
}

int  main()
{
	Publication* pObj[25];
	int nCount = 0; //To keep track of how many publication instances are created. 

	while(1)
	{	
		cout<<"\n1.Add Publication"<<"\n2.Display All\n"<<endl;
		int option;
		cout<<"Enter your option: ";
		cin>>option;

		if(option==1){
			//Add new book
			pObj[nCount] = new Publication;
			pObj[nCount]->getdata();
			nCount++;
		}else if(option == 2){
			//print all publications
			for(int i=0; i<nCount;i++){
				pObj[i]->putdata();
			}

		}else{
			exit(0);
		}
	};

	return 0;
}

INPUT
1
Return_Of_Devil 12.00
32
14
1
Wings_Of_Fire 90.60
144
32
2

OUPUT
Title: Return_Of_Devil Price: 12 PageCount: 32 Size: 14
Title: Wings_Of_Fire Price: 90.6 PageCount: 144 Size: 32

SCREENSHOT