C / C++ Code Portfolio

void applyMonthlyInterest();
// member function to apply one month of interest to savingsBalance
static void setAnnualInterestRate(double newInterestRate);
private:
// member attributes
double savingsBalance;
static double annualInterestRate;
};
}
#endif // !CHRISBERGER_SAVINGSACCOUNT_H

#include "SavingsAccount.h"

#include
using std::cerr;

// initialize static variable annualInterestRate

double ChrisBerger::SavingsAccount::annualInterestRate;

// constructor taking one argument for the initial balance

ChrisBerger::SavingsAccount::SavingsAccount(double initialBalance)
{
// if the initial balance is negative, display an error and set it to 0
if (initialBalance < 0)
{
cerr << "Initial balance must be nonnegative; setting balance to 0\n";
savingsBalance = 0;
}
// otherwise, initialize the balance
else
{
savingsBalance = initialBalance;
}
}

// getter for savingsBalance

double ChrisBerger::SavingsAccount::getSavingsBalance() const
{
return savingsBalance;
}

// setter for annualInterestRate

void ChrisBerger::SavingsAccount::setAnnualInterestRate(double newInterestRate)
{
// if the rate is negative, display an error and set the rate to 0
if (newInterestRate < 0)
{
cerr << "New interest rate must be nonnegative; setting rate to 0\n";
ChrisBerger::SavingsAccount::annualInterestRate = 0;
}
// otherwise, set the rate
else
{
ChrisBerger::SavingsAccount::annualInterestRate = newInterestRate;
}
}

// member function to accure interest on the savingsBalance

void ChrisBerger::SavingsAccount::applyMonthlyInterest()
{
// add one month of interest to the account balance
savingsBalance += savingsBalance *
ChrisBerger::SavingsAccount::annualInterestRate / 12;
}