123 lines
2.9 KiB
C++
123 lines
2.9 KiB
C++
// acctabc.cpp -- bank account class methods
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#include <iostream>
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#include "acctabc.h"
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using std::cout;
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using std::ios_base;
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using std::endl;
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using std::string;
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// Abstract Base Class
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AcctABC::AcctABC(const string & s, long an, double bal)
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{
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fullName = s;
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acctNum = an;
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balance = bal;
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}
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void AcctABC::Deposit(double amt)
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{
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if (amt < 0)
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cout << "Negative deposit not allowed; "
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<< "deposit is cancelled.\n";
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else
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balance += amt;
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}
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void AcctABC::Withdraw(double amt)
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{
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balance -= amt;
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}
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// protected methods for formatting
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AcctABC::Formatting AcctABC::SetFormat() const
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{
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// set up ###.## format
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Formatting f;
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f.flag =
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cout.setf(ios_base::fixed, ios_base::floatfield);
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f.pr = cout.precision(2);
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return f;
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}
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void AcctABC::Restore(Formatting & f) const
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{
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cout.setf(f.flag, ios_base::floatfield);
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cout.precision(f.pr);
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}
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// Brass methods
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void Brass::Withdraw(double amt)
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{
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if (amt < 0)
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cout << "Withdrawal amount must be positive; "
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<< "withdrawal canceled.\n";
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else if (amt <= Balance())
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AcctABC::Withdraw(amt);
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else
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cout << "Withdrawal amount of $" << amt
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<< " exceeds your balance.\n"
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<< "Withdrawal canceled.\n";
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}
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void Brass::ViewAcct() const
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{
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Formatting f = SetFormat();
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cout << "Brass Client: " << FullName() << endl;
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cout << "Account Number: " << AcctNum() << endl;
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cout << "Balance: $" << Balance() << endl;
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Restore(f);
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}
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// BrassPlus Methods
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BrassPlus::BrassPlus(const string & s, long an, double bal,
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double ml, double r) : AcctABC(s, an, bal)
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{
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maxLoan = ml;
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owesBank = 0.0;
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rate = r;
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}
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BrassPlus::BrassPlus(const Brass & ba, double ml, double r)
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: AcctABC(ba) // uses implicit copy constructor
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{
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maxLoan = ml;
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owesBank = 0.0;
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rate = r;
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}
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void BrassPlus::ViewAcct() const
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{
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Formatting f = SetFormat();
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cout << "BrassPlus Client: " << FullName() << endl;
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cout << "Account Number: " << AcctNum() << endl;
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cout << "Balance: $" << Balance() << endl;
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cout << "Maximum loan: $" << maxLoan << endl;
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cout << "Owed to bank: $" << owesBank << endl;
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cout.precision(3);
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cout << "Loan Rate: " << 100 * rate << "%\n";
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Restore(f);
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}
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void BrassPlus::Withdraw(double amt)
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{
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Formatting f = SetFormat();
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double bal = Balance();
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if (amt <= bal)
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AcctABC::Withdraw(amt);
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else if ( amt <= bal + maxLoan - owesBank)
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{
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double advance = amt - bal;
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owesBank += advance * (1.0 + rate);
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cout << "Bank advance: $" << advance << endl;
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cout << "Finance charge: $" << advance * rate << endl;
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Deposit(advance);
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AcctABC::Withdraw(amt);
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}
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else
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cout << "Credit limit exceeded. Transaction cancelled.\n";
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Restore(f);
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}
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