/* bkClass.cpp by detour@metalshell.com
 *
 * Very basic example of a class
 *
 * http://www.metalshell.com/
 *
 */

#include <string>
#include <iostream>

class Book {
	/* Private members of a class can never be altered
	   by anything but functions of the class. The data
	   is considered hidden. */
	private:
		int pages;
		char ISBN[14];
	/* All the functions needed to be called from outside
	   the class are declared as public. */
	public:
		/* Becuase only functions in the class can modify the
		   data you need to have set functions.  Always perform
		   your checks for valid data in these functions. */
		void setISBN(char *nISBN) {
			if(strlen(nISBN) < 14)
				strcpy(ISBN, nISBN);
		}
		void setPages(int npages) {
			pages = npages;
		}
		/* A print out of the data */
		void displayData() {
			cout << "*******  Book  *******\n";
			cout << "* ISBN:  " << ISBN << endl;
			cout << "* Pages: " << pages << endl;
			cout << "**********************\n";
		}
};

int main() {
	Book myBook;

	myBook.setISBN("0-671-04191-6");
	myBook.setPages(296);
	myBook.displayData();

    /* These would not work becuase you can not read or
	   modified private data */
	// cout << myBook.ISBN;
	// pages = 500;

	return 0;
}