🏦 Bank Management System

Bank Management System (C++) The Bank Management System is a simple console-based application built in C++ that allows users to manage basic banking operations. It uses Object-Oriented Programming (OOP) principles, the Standard Template Library (STL) for data storage, and file I/O for persistent data saving. A simple console-based Bank Management System implemented in C++ using Object-Oriented Programming principles. 💻

⭐ Features

✅ Object-Oriented Design - Uses Account and Bank classes
✅ STL Integration - Uses vector for efficient account storage
✅ Persistent Storage - Automatically saves/loads data to/from accounts.txt
✅ Menu-Driven Interface - User-friendly console interface
✅ Core Banking Operations:

• 🏦 Create new accounts
• 💰 Deposit money
• 💸 Withdraw money (with balance validation)
• 📊 Display all accounts with formatted output

🛠️ Technical Specifications

• Language: C++11 or later 💻
• Data Structure: STL Vector 📚
• File I/O: Text file storage (accounts.txt) 📁
• Design Pattern: Object-Oriented Programming 🏗️
• Memory Management: RAII principles 🧠

📁 Project Structure

BankManagementSystem/
│
├── src/
│   └── main.cpp           # Main source code
├── data/
│   └── accounts.txt       # Sample data file
├── screenshots/
│   └── program_demo.png   # Program screenshot
├── README.md              # Project documentation
├── LICENSE                # MIT License
└── .gitignore            # Git ignore file

🚀 Compilation and Usage

📋 Prerequisites

• C++ compiler (GCC, Clang, or Visual Studio) 🔧
• C++11 or later standard support 📈

🛠️ Compilation

# Using g++
g++ -std=c++11 -o bank_system src/main.cpp

# Using clang++
clang++ -std=c++11 -o bank_system src/main.cpp

# Using Visual Studio (Windows)
cl /EHsc src/main.cpp

▶️ Running the Program

./bank_system

📖 Usage Guide

🎮 Main Menu Options:

1. Create Account - Add a new bank account 🆕
2. Deposit - Add money to an existing account 💰
3. Withdraw - Remove money from an account (with balance check) 💸
4. Display All Accounts - View all accounts in a formatted table 📊
5. Exit - Save data and quit 🚪

💡 Sample Interaction:

=== Bank Management System ===
1. Create Account
2. Deposit
3. Withdraw
4. Display All Accounts
5. Exit
Enter choice: 1

Enter account number: 1001
Enter holder name: John Doe
Enter initial balance: 5000.50
Account created successfully.

📄 File Format

The program automatically saves account data in accounts.txt with the following format:

1001
John Doe
5000.50
1002
Jane Smith
3000.00

🏗️ Class Structure

🏦 Account Class

class Account {
private:
    int accountNumber;
    string holderName;
    double balance;
    
public:
    // Constructor, getters, deposit(), withdraw(), display()
};

🏢 Bank Class

class Bank {
private:
    vector<Account> accounts;
    const string fileName = "accounts.txt";
    
public:
    // CRUD operations, file I/O methods
};

🎯 Key Features Explained

• RAII Design: Constructor loads data, destructor saves data automatically 🔄
• Input Validation: Prevents overdrafts and handles invalid inputs ✅
• Formatted Output: Uses iomanip for professional table display 📊
• STL Usage: Efficient memory management with std::vector 🧠
• Move Semantics: Optimized string handling in constructor ⚡

🚀 Future Enhancements

• 🔍 Account search functionality
• 📈 Transaction history
• 💹 Interest calculation
• 🗑️ Account deletion
• 🔐 Password protection
• 🗄️ Database integration
• 🖥️ GUI interface

🤝 Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

📜 License

This project is licensed under the MIT License - see the LICENSE file for details.

👨‍💻 Author

SELLO KGOLE

Created as a demonstration of Object-Oriented Programming concepts in C++.

🙏 Acknowledgments

• C++ STL Documentation 📚
• Object-Oriented Design Principles 🏗️
• File I/O Best Practices 📁

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Note: This is an educational project demonstrating basic banking operations. For production use, implement proper security measures, encryption, and database storage.