/*************************************
 * File:    Money.cpp
 * Author:  Katherine Gibson
 * Date:    3/1/2016
 * Section: N/A
 * E-mail:  k38@umbc.edu
 * Description:
 *   This file contains the full
 *   definition for a Money class
 *   including the overloaded subtract
 *************************************/

#include "Money.h"
#include <iostream>
#include <string>
using namespace std;

Money::Money() {
   // left blank
}

Money::Money(int dollars, int cents) {
   m_dollars = dollars;
   m_cents = cents;
}

void Money::Output(string name) {
   cout << name << " is $" << m_dollars << "." << m_cents << endl;
}

Money Money::operator- ( const Money& amount2) {
   int dollarsRet, centsRet;
   // if we had money1 - money2
   // "this" is money1, and "amount2" is money2
   // we actually don't need to use "this" in this function, though

   // if the subtracted cents are larger, we prevent
   // them from going negative
   if (m_cents <= amount2.m_cents) {
      dollarsRet = m_dollars - amount2.m_dollars - 1;
      centsRet = 100 + (m_cents - amount2.m_cents);
   }
   // otherwise, proceed as normal
   else {
      centsRet = m_cents - amount2.m_cents;
      dollarsRet = m_dollars - amount2.m_dollars;
   }

   // return a new money object
   return Money(dollarsRet, centsRet);

}