C++ Polymorphism

 

First of all, list the four essential ingredients for having a polymorphic method call in the multi-line comment at the top of the .cpp file. Label the code (including in main()) with comments where each of the four ingredients is manifest. Additionally, add a comment indicating the polymorphic call. Furthermore, add four classes. First, add an abstract base class named Account. Choose the method to make it an abstract base class wisely. Additionally, add a SavingsAccount, aCheckingAccount, and a CDAccount each of which inherits from Account. Make sure you put the common private data members and member methods in Account.

 

Finally, when your code is executed, the output must match this.

(Bank account index 0) Savings Account Information: Balance: $222.21 Interest rate: 1.2% (Bank account index 1) Checking Account Information: Balance: $5.69 Last check number processed: 234 (Bank account index 2) CD Account Information: Balance: $5000 Interest rate: 2.5% Maturity: 6 months /* Four essential ingredients for having a polymorphic method call: * 1) * 2) * 3) * 4) */ #include <iostream> using std::cout; using std::endl; // add class declaration and implementations HERE const double SAVINGS_INTEREST_RATE = 1.2; const double CD_INTEREST_RATE = 2.5; const int NUM_BANK_ACCOUNTS = 3; int main(){ SavingsAccount firstHome( 1234.56, SAVINGS_INTEREST_RATE); CheckingAccount gasMoney( 78.90); CDAccount tuition( 5000.00, CD_INTEREST_RATE, 6); Account* bankAccounts[ NUM_BANK_ACCOUNTS ]; // array of 3 Account pointers firstHome.deposit( 987.65); gasMoney.deposit( 12.34); firstHome.withdraw( 2000.00); int checkNumber = 234; gasMoney.processCheck( 55.55, checkNumber); bankAccounts[0] = &firstHome; bankAccounts[1] = &gasMoney; bankAccounts[2] = &tuition; bankAccounts[1]->deposit( 20.00); bankAccounts[1]->withdraw( 50.00); for( int i = 0; i < NUM_BANK_ACCOUNTS; i++){ cout << "(Bank account index " << i << ")\n"; bankAccounts[i]->printInfo(); cout << endl; } return 0; }