cashdispenser.cpp

ATM取款机模拟程序

// CashDispenser.cpp
// Member-function definitions for class CashDispenser.
#include "CashDispenser.h" // CashDispenser class definition

// CashDispenser default constructor initializes count to default
CashDispenser::CashDispenser()
{
   count = INITIAL_COUNT; // set count attribute to default
} // end CashDispenser default constructor

// simulates dispensing of specified amount of cash; assumes enough cash 
// is available (previous call to isSufficientCashAvailable returned true)
void CashDispenser::dispenseCash( int amount )
{
   int billsRequired = amount / 20; // number of $20 bills required
   count -= billsRequired; // update the count of bills
} // end function dispenseCash

// indicates whether cash dispenser can dispense desired amount
bool CashDispenser::isSufficientCashAvailable( int amount ) const
{
   int billsRequired = amount / 20; // number of $20 bills required

   if ( count >= billsRequired )
      return true; // enough bills are available
   else 
      return false; // not enough bills are available
} // end function isSufficientCashAvailable


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