acctABC.cpp

// acctabc.cpp -- bank account class methods
#include <iostream>
#include <cstring>
using std::cout;
using std::ios_base;
using std::endl;

#include "acctabc.h"

// Abstract Base Class
AcctABC::AcctABC (const char *s, long an, double bal)
{
	std::strncpy(fullName, s, MAX - 1);
	fullName[MAX - 1] = '\0';
	acctNum = an;
	balance = bal;
}

void AcctABC::Deposit (double amt)
{
	if (amt < 0) {
		cout << "Negative deposit not allowed: "
			<< "deposit is cancelled.\n";
	} else {
		balance += amt;
	}
}

void AcctABC::Withdraw (double amt)
{
	balance -= amt;
}

// protected methods
ios_base ::fmtflags AcctABC::SetFormat()const
{
	ios_base ::fmtflags initialState =
		cout.setf(ios_base ::fixed, ios_base ::floatfield);
	cout.setf (ios_base ::showpoint);
	cout.precision (2);
	return initialState;
}

// Brass methods
void Brass ::Withdraw (double amt)
{
	if (amt < 0) {
		cout << "Withdrawal amount must be postive;"
			<< "withdrawal canceled.\n";
	} else if (amt <= Balance()) {
		AcctABC ::Withdraw (amt);
	} else {
		cout << "Withdrawal amount of $" << amt
			<< " exceeds your balance.\n"
			<< "Withdrawal canceled.\n";
	}
}

void Brass ::ViewAcct()const
{
	ios_base ::fmtflags initialState = SetFormat();
	cout << "Brass Client: " << FullName() << endl;
	cout << "Account Number: " << AcctNum() << endl;
	cout << "Balance: $" << Balance() << endl;
	cout.setf (initialState); 
}

// BrassPlus methods
BrassPlus ::BrassPlus (const char *s, long an, double bal,
		double ml, double r): AcctABC(s, an, bal)
{
	maxLoan = ml;
	owesBank = 0.0;
	rate = r;
}

BrassPlus ::BrassPlus (const Brass & ba, double ml, double r)
		: AcctABC (ba)	// uses implicit copy construction
{
	maxLoan = ml;
	owesBank = 0.0;
	rate = r;
}

void BrassPlus::ViewAcct()const
{
	ios_base ::fmtflags initialState = SetFormat();
	cout << "BrassPlus Client: " << FullName() << endl;
	cout << "Account Number: " << AcctNum() << endl;
	cout << "Balance: $" << maxLoan << endl;
	cout << "Owed to bank: $" << owesBank << endl;
	cout << "Loan Rate: " << 100 * rate << endl;
	cout.setf (initialState);
}

void BrassPlus::Withdraw (double amt)
{
	ios_base ::fmtflags initialState = SetFormat();

	double bal = Balance();
	if (amt <= bal) {
		AcctABC ::Withdraw(amt);
	} else if (amt <= bal + maxLoan - owesBank) {
		double advance = amt - bal;
		owesBank += advance * (1.0 + rate);
		cout << "Bank advance: $" << advance << endl;
		cout << "Fiance charge: $" << advance * rate <<endl;
		Deposit(advance);
		AcctABC ::Withdraw(amt);
	} else {
		cout << "Credit limit exceeded. Transaction cancelled.\n";
	}
	cout.setf (initialState);
}