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

using std::string;
using std::istream;
using std::ostream;
using std::cout;
using std::endl;

// using initializer list
// order of initialization is the order of declaration in class (not here)
FirstClass:: FirstClass() : value(0), num(0), name("")
  {}

FirstClass::FirstClass(int n) : value(-1)
{
  setNum(n);
}

  FirstClass::FirstClass(double d, int n, string s)
{
  value = d;
  setNum(n);
  name = s;
} 

  FirstClass::FirstClass(const FirstClass & other)
{
  num = other.num;
  value = other.value;
  name = other.name;
} 

  // Destructor
  FirstClass::~FirstClass()
{
  cout << "destroying " << name << endl;
}

  ostream & FirstClass::write(ostream & os) const
{
  os << name << " " << num << " " << value;
  return os;
}

  istream & FirstClass::read(istream & is) 
{
  is >> num >> value >> name;
  return is;
}

  bool FirstClass::setNum(int n)
{
  if (isValid(n))
	{	num = n;
	  return true;
	}
  return false;
}

  double FirstClass::deltaValue(double delta)
{
  double temp = value;
  value += delta;
  return temp;
}