// ==========================================================================
// $Id: person_io.cpp,v 1.3 2014/11/29 00:31:44 jlang Exp $
// CSI2372 example Code for lecture 8
// ==========================================================================
// (C)opyright:
//
//   Jochen Lang
//   SITE, University of Ottawa
//   800 King Edward Ave.
//   Ottawa, On., K1N 6N5
//   Canada. 
//   http://www.site.uottawa.ca
// 
// Creator: jlang (Jochen Lang)
// Email:   jlang@site.uottawa.ca
// ==========================================================================
// $Log: person_io.cpp,v $
// Revision 1.3  2014/11/29 00:31:44  jlang
// Check-in of in-class version
//
// Revision 1.2  2011/09/10 01:08:19  jlang
// Updates F10
//
// Revision 1.1  2006/10/17 22:18:48  jlang
// Added examples for lecture 8
//
//
// ==========================================================================
#include <iostream>
#include <string>
#include <fstream>
// rand() requires
#include <cstdlib>

using namespace std;

class Person;

istream& operator>>( istream&, Person&);
ostream& operator<<( ostream&, const Person& );

class Person {
  string d_lastName;
  string d_firstName;
  int d_sin;
public:
  Person( const string& _firstName = "", 
          const string& _lastName = "" );  

  ~Person() {
    cout << "~Person: " << d_lastName << endl;
  }
  friend istream& operator>>( istream&, Person& );
  friend ostream& operator<<( ostream&, const Person& );
};		

Person::Person( const string& _firstName,
                const string& _lastName ) 
  : d_firstName( _firstName ), d_lastName( _lastName ), d_sin( 0 ) 
{
  d_sin = rand();
  cout << "new Person" << endl;
}

istream& operator>>( istream& _is, Person& _p) {
  _is >> _p.d_firstName >> _p.d_lastName >> _p.d_sin;
  // check for failure
  if ( !_is ) _p = Person();
  return _is;
}

ostream& operator<<( ostream& _os, const Person& _p) {
  _os << _p.d_firstName << "\t" << _p.d_lastName << "\t"; 
  _os << _p.d_sin;
  return _os;
}


int main() {
  fstream ioFile;
  Person personA, personB;
  // read personA from console
  cin >> personA;
  cout << "-------------------" << endl;
  // output personA to file 
  ioFile.open( "people.txt", ios::out );
  ioFile << personA;
  ioFile.close();
  // read personB from file
  ioFile.open( "people.txt", ios::in );
  ioFile >> personB;
  ioFile.close();
  // output personB to console
  cout << "Person: " << personB << endl;
  return 0;
}