💳 C++ Bank Management System

A modern console-based banking application written in C++, designed to simulate real-world banking operations with client, user, and transaction management features.
It’s a clean, well-structured project ideal for learning OOP, file handling, and system architecture in C++.

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📍 Project Summary

This project demonstrates how to build a complete banking system using Object-Oriented Programming principles.
It provides separate modules for user login, client accounts, and transaction handling while saving data securely in files.

The system is fully menu-driven and offers role-based access, making it useful for both beginners learning C++ and intermediate developers practicing clean software design.

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⚡ Core Capabilities

🔐 User Login & Permissions

• Login with username and password
• Permission-based access to system features
• Active session management

👨‍💼 Client Account Management

• Add, view, update, and delete bank clients
• Search by account number
• Manage PIN codes, balances, and personal details

💵 Banking Operations

• Deposit and withdraw money from client accounts
• Check total and individual account balances
• Validate balance before withdrawals

👥 User Administration

• Create, edit, and delete system users
• Assign roles and permissions to users
• View full user list

💽 Data Storage

• Persistent data stored in text files
• Custom serialization/deserialization
• Automatic data file creation on first run

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🧩 System Structure

Each screen is an independent UI module that handles its own logic, making the system easy to maintain and extend.

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⚙️ Setup & Installation

Requirements

• Windows 10/11
• Visual Studio 2019+ with C++ support
• C++17 standard or newer

Steps

1. Clone this repository or download the ZIP
2. Open the .sln file in Visual Studio
3. Build the project (Ctrl+Shift+B)
4. Run the program (F5)

On first launch, the system will create Clients.txt and Users.txt automatically.

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📁 Project Layout

Class Design

BankSystem/ │ ├── BankSystem.cpp

├── Global.h

├── clsPerson.h

├── clsBankClient.h

├── clsUser.h

│

├── clsMainScreen.h

├── clsLoginScreen.h

├── clsTransactionsScreen.h

├── clsClientListScreen.h

├── clsAddNewClientScreen.h

├── clsUpdateClientScreen.h

├── clsDeleteClientScreen.h

├── clsFindClientScreen.h

├── clsDepositScreen.h

├── clsWithdrawScreen.h

├── clsTotalBalancesScreen.h

├── clsManageUsersScreen.h

│

├── clsScreen.h

├── clsInputValidate.h

├── clsString.h

├── clsUtil.h

├── clsDate.h

│

├── Users.txt

├── Clients.txt

└── README.md

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🖥️ How to Use

1. Start the program
2. Go to User.txt and git (user and password)
3. Use the main menu to:
   • 1 Show Client List
   • 2 Add New Client
   • 3 Update Client Info
   • 4 Delete Client
   • 5 Find Client
   • 6 Transactions (deposit, withdraw, check balance)
   • 7 Manage Users
   • 8 Logout

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⚡ Technical Details

Data format FirstName#//#LastName#//#Email#//#Phone#//#AccountNumber#//#PinCode#//#Balance

Storage

• Users.txt — user accounts
• Clients.txt — bank clients

Memory

• Uses stack allocation and RAII principles
• No raw dynamic memory to prevent leaks

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🐞 Known Limitations

• Windows-only (uses Windows console)
• No concurrent access handling
• Minimal error handling
• Limited input validation

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🚀 Future Plans

• Implement secure password hashing
• Migrate to a real database (SQLite/MySQL)
• Create a GUI or web interface
• Mobile version support

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🤝 Contributions

This project is built for educational purposes.
Contributions are welcome — especially in:

• Security
• Code quality
• New features
• Bug fixing

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