Change the Date for all objects of a class

Hello, I'm hoping I can get an idea for how to impliment this.

I have two subclasses (SavingsAccount & CheckingAccount) that derive from a BankAccount class. What I need to do is call a function that changes the date of all objects created by either two subclasses. For example:

Code:

---

BankAccount.changeDate(1,1,2000);
savingsAccountA.print();
savingsAccountB.print();
checkingAccountA.print();
checkingAccountB.print();

BankAccount.changeDate(2,14,2001);
savingsAccountA.print();
savingsAccountB.print();
checkingAccountA.print();
checkingAccountB.print();

---

Output:

Quote:

---

Savings Account A: Jan 1, 2000
Savings Account B: Jan 1, 2000
Checking Account A: Jan 1, 2000
Checking Account B: Jan 1, 2000

Savings Account A: Feb, 14, 2001
Savings Account B: Feb, 14, 2001
Checking Account A: Feb, 14, 2001
Checking Account B: Feb, 14, 2001

---

I'm sure there is a simple way to do this, but for the life of me I can't figure it out. The ultimate goal is to make a date mutatable so that when a new month is set, interest will be added to each account as well as some other monthly occurances.

The easiest way I can think of is to make the actual date member(s) and the changeDate() method static members of the base class.

I think I understand what you mean, but wouldn't I have to changeDate() for each and every instance of an object? or is that the purpose of making the members static?

[edit] Nevermind, that was a dumb question...So I could, in a sense, create a date object of the BankAccount to handle all date changes in theory? I'll give it a shot. Thanks for your help!

Quote:

---

Originally Posted by ShadowDragon

[edit] Nevermind, that was a dumb question...So I could, in a sense, create a date object of the BankAccount to handle all date changes in theory? I'll give it a shot. Thanks for your help!

---

Static date object ...preferably in the protected region.

It works beautifully! The only thing I am having a problem with is when I try to impliment the actions needed when a month changes. I have it setup where:

Code:

---

void

---

Code:

---

int BankAccount::transactionsAMonthCounter = 1;
BankAccount::helpIncrement() //used in an =+ operator overloader
{   

if(!endOfMonth(day)) //finds out if the incremented date is at the end of the month

day++;

else

if (month < 12) {

month++;
day = 1;

transactionsAMonthCounter = 1;

          }       

else {

            year++;
            month = 1;
            day = 1;
      }

}

---

So what I am trying to do is reset the number of transactions that are limited by the Savings Account per month. Currently the savings account has it set up with a loop that increases the transactionsAMonthCounter by 1 each time a successful transaction is made. However, because the date manipulation needs to effect both the checkingAccount and the SavingsAccount classes, I need to somehow set the transactionsAMonthCount back to 1 from the BankAccount class. I tried to make it static, but when I debug it keeps placing the static value for transactionsAMonthCounter to -85899...etc(the limit of the int value).

Any suggestions?