/* This is the body of the Money ADT/class specificed in money.h
   Compile (but do not link, like this
	g++ -c money.cc
It will then create a money.o ready to be linked with other modules...
*/
#include <stream.h>
#include "money.h"

using namespace std;

//Initalizations and casts.
Money::Money() { dollars=0; cents=0; } //clean initial values
Money::Money(const int n) { dollars=n ; cents=0; } //conversion(cast)
Money::Money(const int d, int c) 
	{ dollars=d ; cents=(dollars<0?-c:c); 
	} 
Money::Money(const double n) { dollars=(int)n ; cents=100*(int(n)-dollars); } 

//a method for outputing an Money.
ostream& operator<<(ostream& s, Money n)
{ if(n.dollars>=0)
	{ 
	  s<<" $" << (n.dollars)<<"." 
	   << (n.cents<10?"0":"") <<n.cents; 
	}
  else // n.dollars <0
	{
	  s<<"-$" << (-n.dollars)<<"." 
	   << (-n.cents<10?"0":"") << -n.cents; 
	}
  return s;
}

//arithmetic operators  -- money does not divide and $2.1*$2.2 is silly.
Money Money::operator+( Money b) 
   { int cc; cc= cents+b.cents;
	return Money(dollars + b.dollars+cc/100, cc%100) ; 
   }
Money Money::operator*(int b)
	{ int cc; cc=cents*b;
	  if ( dollars>0 )
		  return Money(dollars * b+cc/100, cc%100) ;
	  else
		  return Money(dollars * b+cc/100, ((-cc)%100)  ) ;
	}
Money Money::operator-() { return Money( - dollars, -cents ); }
Money Money::operator-(Money b) { return *this + (- b) ; }

//Overload the comparison operators
int operator<(Money a, Money b) 
{ if (a.dollars < b.dollars) return 1;
  else if (a.dollars == b.dollars) return a.cents<b.cents ; 
  else return 0;
}
int operator>(Money a, Money b) 
{ return b < a ; 
}
int operator>=(Money a, Money b) 
{ if (a.dollars >= b.dollars) return 1;
  else if (a.dollars == b.dollars) return a.cents>=b.cents ; 
  else return 0;
}
int operator<=(Money a, Money b) 
{ return b >= a ; 
}
int operator==(Money a, Money b) 
{ return a.dollars == b.dollars && a.cents == b.cents; 
}
int operator!=(Money a, Money b) 
{ return a.dollars != b.dollars&& a.cents != b.cents ; 
}