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Programming Methodology

BankAccount Class in C++ with Methods for Deposit, Withdraw, and Balance Check

In this exercise, you will implement a C++ class called "BankAccount" with methods to deposit, withdraw, and check the balance. The class will have a private attribute to store the account balance. You will also include methods to deposit money into the account, withdraw money, and display the current balance. This task will help you understand how to implement basic functionalities in a class and manipulate data in C++ using object-oriented programming concepts.

Group

Object-Oriented Programming in C++

Objective

1. Define a class called "BankAccount" with a private attribute: balance (double).
2. Add a constructor to initialize the balance to zero.
3. Implement a method to deposit money into the account.
4. Implement a method to withdraw money from the account, ensuring that the balance does not go negative.
5. Implement a method to check and display the current balance.
6. In the main function, create an object of the BankAccount class, deposit money, withdraw money, and check the balance.

Develop a BankAccount class with methods to deposit, withdraw, and check balance.

Example C++ Exercise

 Copy C++ Code 
#include <iostream>  // Include the standard input/output library
using namespace std;

// Define the 'BankAccount' class
class BankAccount {
private:
    double balance;  // Private attribute for the account balance

public:
    // Constructor to initialize the balance to zero
    BankAccount() {
        balance = 0.0;  // Set the balance to 0 initially
    }

    // Method to deposit money into the account
    void deposit(double amount) {
        if (amount > 0) {  // Ensure the deposit amount is positive
            balance += amount;  // Add the amount to the balance
            cout << "$" << amount << " deposited successfully." << endl;
        } else {
            cout << "Deposit amount must be positive!" << endl;
        }
    }

    // Method to withdraw money from the account
    void withdraw(double amount) {
        if (amount > 0 && amount <= balance) {  // Ensure withdrawal is valid
            balance -= amount;  // Subtract the amount from the balance
            cout << "$" << amount << " withdrawn successfully." << endl;
        } else if (amount > balance) {
            cout << "Insufficient balance!" << endl;  // Handle insufficient balance
        } else {
            cout << "Withdrawal amount must be positive!" << endl;  // Handle invalid withdrawal
        }
    }

    // Method to check and display the current balance
    void checkBalance() {
        cout << "Current balance: $" << balance << endl;  // Display the balance
    }
};

int main() {
    // Create a 'BankAccount' object
    BankAccount myAccount;

    // Deposit money into the account
    myAccount.deposit(500.0);

    // Withdraw money from the account
    myAccount.withdraw(200.0);

    // Check and display the current balance
    myAccount.checkBalance();

    // Try an invalid withdrawal (insufficient balance)
    myAccount.withdraw(400.0);

    // Check balance again
    myAccount.checkBalance();

    return 0;  // Return 0 to indicate successful execution
}

 Output

$500 deposited successfully.
$200 withdrawn successfully.
Current balance: $300
Insufficient balance!
Current balance: $300

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