Question

Using C++

Create a polymorphic banking program using the Bank-Account hierarchy created in Exercise 2 of Written Assignment 4. For each account in the vector, allow the user to specify an amount of money to withdraw from the Bank-Account using member function debit and an amount of money to deposit into the Bank-Account using member function credit. As you process each Bank-Account, determine its type. If a Bank-Account is a Savings, calculate the amount of interest owed to the Bank-Account using member function calculateInterest, then add the interest to the account balance using member function credit. After processing an account, print the updated account balance obtained by invoking base-class member function getBalance. [MO 5.1, MO 5.2]

Answer 1

ANSWER :

Code :-

#include <iostream>

#include <vector>

using namespace std;

class Account{

public:

Account(double);

virtual void credit(double);

virtual bool debit(double);

void setBalance(double);

double getBalance();

private:

double balance;

};

Account::Account(double initialBalance){

if(initialBalance>=0.0)

balance=initialBalance;

else

cout<<"Not valid number."<<endl;

}

void Account::credit(double amount)

{

balance=balance+amount;

}

bool Account::debit(double amount)

{

if (amount>balance){

cout<<"Debit amount exceeded account balance." << endl;

return false;

}

else{

balance=balance-amount;

return true;

}

}

void Account::setBalance(double newb)

{

balance=newb;

}

double Account::getBalance()

{

return balance;

}

class SavingAccount:public Account

{

public:

SavingAccount(double,double);

double calculateInterest();

private:

double myrate;

};

SavingAccount::SavingAccount(double initialBalance,double rate):Account(initialBalance)

{

myrate=rate;

}

double SavingAccount::calculateInterest()

{

return getBalance()*myrate;

}

class CheckingAccount:public Account

{

public:

CheckingAccount(double,double);

void credit(double);

bool debit(double);

void chargeFee();

private:

double myfee;

};

CheckingAccount::CheckingAccount(double initialBalance,double fee):Account(initialBalance)

{

myfee=fee;

}

void CheckingAccount::credit(double amount)

{

Account::credit(amount);

chargeFee();

}

bool CheckingAccount::debit(double amount)

{

if (true==Account::debit(amount))

{

chargeFee();

return true;

}

else{

return false;

}

}

void CheckingAccount::chargeFee() {

Account::setBalance(getBalance()-myfee);

}

int main(){

const int SIZE = 3;

// creating three account

vector<Account *>account(SIZE);

double interest;

double withdraw;

double deposit;

account[0]=new SavingAccount(1000,0.5);

account[1]=new CheckingAccount(1000,0.7);

account[2]=new SavingAccount(2000,0.4);

for(int i=0; i<SIZE; i++) {

cout<<"Processing Account number "<<(i+1)<<" balance: $"<<account[i]->getBalance()<<endl;

// debit

cout<<"Enter amount for debit: ";

cin>>withdraw;

account[i]->debit(withdraw);

// credit

cout<<"Enter amount to credit: ";

cin>>deposit;

account[i]->credit(deposit);

// type of acount

SavingAccount *sav = dynamic_cast<SavingAccount*>(account[i]);

if(sav != NULL) {

cout<<"Account is of Saving type"<<endl;

interest = sav->calculateInterest();

cout<<"Interest owned: "<<interest<<endl;

sav->credit(interest);

}else {

cout<<"Account "<<(i+1)<<" is of Checking type"<<endl;

}

cout<<"Final balance: "<<account[i]->getBalance()<<endl;

cout<<endl;

}

// deleting the objects

for(int i=0; i<SIZE; i++)

delete account[i];

return 0;

}

Output :-

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