.net编程

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Visual C++

CreditCardAccount.cpp：源码内容

							#include "stdafx.h"
#include "CreditCardAccount.h"
#using <mscorlib.dll>
using namespace System;
int CreditCardAccount::numberOfAccounts = 0;
CreditCardAccount::CreditCardAccount(long number, double limit)
{
    accountNumber = number;
    creditLimit = limit;
    currentBalance = 0.0;
    
	ptrLoyaltyScheme = 0;
    numberOfAccounts++;
    Console::Write("Number of accounts created: ");
    Console::WriteLine(numberOfAccounts);
}
CreditCardAccount::~CreditCardAccount()
{
    Console::Write("Account being destroyed: ");
    Console::WriteLine(accountNumber);
    Console::Write("Closing balance: ");
    Console::WriteLine(currentBalance);
	delete ptrLoyaltyScheme;
}
bool CreditCardAccount::MakePurchase(double amount)
{
    if (currentBalance + amount > creditLimit)
    {
        return false;
    }
    else
    {
        currentBalance += amount;
        if (currentBalance >= creditLimit / 2)
        {
            if (ptrLoyaltyScheme == 0)
            {
                ptrLoyaltyScheme = new LoyaltyScheme();
            }
			else
			{
				ptrLoyaltyScheme->EarnPointsOnAmount(amount);
			}
        }
        return true;
    }
}
void CreditCardAccount::MakeRepayment(double amount)
{
	currentBalance -= amount;
}
void CreditCardAccount::PrintStatement() 
{
	Console::Write("Account number: ");
	Console::WriteLine(accountNumber);
	Console::Write("Current balance: ");
	Console::WriteLine(currentBalance);
}
int CreditCardAccount::GetNumberOfAccounts()
{
    return numberOfAccounts;
}
void CreditCardAccount::RedeemLoyaltyPoints()
{
	if (ptrLoyaltyScheme == 0)
	{
		Console::WriteLine("Sorry, you do not have a loyalty scheme yet");
	}
	else
	{
		Console::Write("Points available: ");
		Console::Write( ptrLoyaltyScheme->GetPoints() );
        Console::Write(". How many points do you want to redeem? ");
		String * input = Console::ReadLine();
		int points = input->ToInt32(0);
		ptrLoyaltyScheme->RedeemPoints(points);
		
		Console::Write("Points remaining: ");
		Console::WriteLine( ptrLoyaltyScheme->GetPoints() );
	}
}

						