// A1.1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <string>

class B {
  public:
    B() { x = 0; }
    virtual ~B() { std::cout << "\n  in B::~B()"; }
    int& value() { return x; }
    virtual void say() { std::cout << "\n  B::x = " << x; }
  private:
    int x; 
};
class D : public B {
  public: 
    D(const std::string &s, std::istream &is); 
    D(const D&d); 
    ~D() { 
      std::cout << "\n  in D::~D()"; 
    }
    virtual void say() {
      B::say();
      std::cout << "\n  D::s = " << s;
      std::cout << "\n  Reading from istream D::is:\n";
      std::string line;
      while(is.good()) {
        std::getline(is,line);
        if(line.size() == 0)
          break;
        std::cout << line << std::endl;
      }
    }
  private:
    std::string s; std::istream &is; 
};
D::D(const std::string &str, std::istream &in) : B(), s(str), is(in) { }

//// answer /////////////////////////////////////
  D::D(const D &d) : B(d), s(d.s), is(d.is) { }
/////////////////////////////////////////////////

int _tmain(int argc, _TCHAR* argv[])
{
  std::cout << "\n  Exam A1 - Question #1 "
            << "\n =======================\n";

  B b; b.value() = 3;
  b.say();

  D d("please enter some lines of text then enter to quit:",std::cin);
  d.value() = -5;
  std::cout << "\n  d's value = " << d.value();
  D d2 = d;
  d2.say();
	return 0;
}