Account.cpp

#include <iostream>
#include <cstring>
#include <cctype>
#include <conio.h>
using namespace std;

const double sav_minbalance = 5000;
const double curr_minbalance = 1000;
const double interestRate = 0.05;

class Account {
protected:
    string depositorName;
    string accountType;
    long accountNumber;
    double balance = 0;

public:
    // constructor
    Account(const string& name, long accNumber, double balance)
    {
        depositorName = name;
        this->accountNumber = accNumber;
        this->balance = balance;
    }

    // accept deposit
    void deposit()
    {
        double amount;
        cout << "Enter amount to deposit: " << endl;
        cin >> amount;
        balance += amount;
        cout << "You successfully deposited $ " << amount << endl;
    }

    // account details
    void display()
    {
        cout << "=================== Account Details =======================" << endl;
        cout << "Holder's Name: " << depositorName << endl;
        cout << "Account No: " << accountNumber << endl;
        cout << "Balance: $ " << balance << endl;
    }

    // permit withdrawal and update balance
    void permitWithdraw()
    {
        int n;
        cout << "Enter 1 to confirm or 2 to cancel." << endl;
        cin >> n;
        if (n == 1)
        {
            cout << "Transaction has been successful" << endl << endl;
        }
        else if (n == 2)
        {
            cout << "Transaction cancelled." << endl;
        }
        else
        {
            cout << "Wrong entry try again." << endl;
        }
    }

    // check minimum balance, impose penalty and update balance
    void penalty()
    {
        if (balance < sav_minbalance)
        {
            double penalty = balance * 0.1;
            balance -= penalty;
            cout << "A fine of $ " << penalty << " has been imposed on your account." << endl;
        }
        else if (balance < curr_minbalance)
        {
            double penalty = balance * 0.05;
            balance -= penalty;
            cout << "A fine of $ " << penalty << " has been imposed on your account." << endl;
        }
        else
        {
            cout << "You have $ " << balance << " in your account. Thanks" << endl;
        }
    }
};

class Curr_Account : public Account
{
public:
    Curr_Account(const string& name, long accNumber, double balance) : Account(name, accNumber, balance) {}

    // withdraw
    void withdraw()
    {
        double amount;
        cout << "Enter amount to withdraw: ";
        cin >> amount;
        if (((balance - amount) > 0) && (balance > curr_minbalance))
        {
            balance -= amount;
            permitWithdraw();
        }
        else
        {
            cout << "Insufficient balance" << endl;
        }
    }
};

class Sav_Account : public Account
{
public:
    Sav_Account(const string& name, long accNumber, double balance) : Account(name, accNumber, balance) {}

    // withdraw
    void withdraw()
    {
        double amount;
        cout << "Enter amount to withdraw: ";
        cin >> amount;
        if (((balance - amount) > 0) && (balance > sav_minbalance))
        {
            balance -= amount;
            permitWithdraw();
        }
        else
        {
            cout << "Insufficient balance" << endl << endl;
        }
    }

    // interest computation
    void compInterest()
    {
        int t;
        double interest;
        cout << "Enter the number of years: ";
        cin >> t;
        interest = balance * interestRate * t;
        balance += interest;
        cout << "Interest of $ " << interest << " has been added to your account" << endl;
    }
};

int main() {
    const int maxCustomers = 100;
    Account* accounts[maxCustomers];
    int numCustomers = 0;

    Curr_Account c("John", 253534, 60000.0);
    Sav_Account s("Doe", 7357634, 80000.0);

    accounts[numCustomers++] = &c;
    accounts[numCustomers++] = &s;

    do
    {
        int option1;
        cout << "=================== WELCOME TO DFCU BANK ========================" << endl;
        cout << endl;
        cout << "Select Account Type. " << endl;
        cout << "1. Saving Account " << endl;
        cout << "2. Current Account " << endl;
        cout << endl;
        cin >> option1;

        switch (option1)
        {
        case 1:
            int options;
            cout << "=========== SAVING ACCOUNT ===============" << endl;
            cout << "1. Withdraw " << endl;
            cout << "2. Compute Interest " << endl;
            cout << "3. Check Balance " << endl;
            cout << "4. Account Details " << endl;
            cout << "5. Exit program";
            cout << endl;
            cout << "Choose an option? " << endl;
            cin >> options;

            switch (options)
            {
            case 1:
                s.withdraw();
                break;
            case 2:
                s.compInterest();
                break;
            case 3:
                s.penalty();
                break;
            case 4:
                s.display();
                break;
            case 5:
                return 0;
            default:
                cout << "Wrong choice. Try again" << endl;
            }
            break;

        case 2:
            int optionc;
            cout << "================ CURRENT ACCOUNT ================" << endl;
            cout << "1. Withdraw " << endl;
            cout << "2. Check Balance " << endl;
            cout << "3. Account Details " << endl;
            cout << "4. Exit Program ";
            cout << endl;
            cout << "Choose an option? " << endl;
            cin >> optionc;

            switch (optionc)
            {
            case 1:
                c.withdraw();
                break;
            case 2:
                c.penalty();
                break;
            case 3:
                c.display();
                break;
            case 4:
                return 0;
            default:
                cout << "Wrong choice. Try again" << endl;
            }

            break;
        }
    } while (1);

    return 0;
}