Give a definition for the function with the following function declaration.
The class BankAccount is defined in Display 10.5.
BankAccount newAccount(BankAccount oldAccount);
//Precondition: oldAccount has previously been given a value
//(that is, its member variables have been given values).
//Returns the value for a new account that has a balance of zero
//and the same interest rate as the oldAccount.
For example, after this function is defined, a program could contain the
following:
BankAccount account3, account4;
account3.set(999, 99, 5.5);
account4 = newAccount(account3);
account4.output(cout);
This would produce the following output:
Account balance $0.00
Interest rate 5.50%