/* constr1.cpp
 */

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

class Book {
	int cost;
	string author;
public:
	Book(){}; //Default constructor
	Book(int c, string a);
	friend ostream& operator<<(ostream& who, Book & what)
	{
	    who << what.author << "  " << what.cost;
	    return who;
	}
};

Book::Book(int c, string a): cost(c), author(a) {}

int main ()
{
	Book a;  // a is with undefined values of cost and author
	Book b(7, "Tolstoy");

	a = b; // assignment is componentwise
	cout << a << endl;

}
/*
The out put of this program is just:

Tolstoy  7
*/