title	description	author	license	language
🏦 Banking System (C++ CLI)	A secure, terminal-based banking system written in modern C++ with SHA-256 PIN hashing, CSV-based persistence, and OOP design.	shyamdotexe	MIT	C++20

🏦 Banking System (C++ CLI)

A simple, secure, and terminal-based banking application built with modern C++.
This project simulates basic banking operations while emphasizing data security and safe file handling.

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✨ Features

• Account Creation
  • Auto-generates unique account numbers
  • Stores data in a CSV file for persistence
• Secure PIN Handling
  • PINs are hashed with SHA-256 (OpenSSL)
  • No plain-text storage
• Transactions
  • Deposit and withdrawal with input validation
• Safe Data Updates
  • Uses a temporary file for atomic updates
• User Experience
  • PIN input masking in the console
  • Currency formatting with precision

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📋 Requirements

• C++11 or later compiler
• OpenSSL installed
• Windows terminal (for _getch()) — can be adapted for Linux/Mac

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🧠 C++ Concepts Used

OOP Principles

• Classes, objects, and encapsulation
• Inheritance & virtual function overriding

File Handling

• Reading/writing CSV files
• Atomic updates via temporary files

Security

• SHA-256 PIN hashing
• Masked input with _getch()

Formatting

• iomanip (setprecision, fixed) for currency display

Memory Management

• Smart pointers (std::unique_ptr)

⚙️ Build & Run

# Clone the repository
git clone https://github.com/shyamdotexe/BANKING-SYSTEM-CPP-CLI.git
cd BANKING-SYSTEM-CPP-CLI

# Compile (requires OpenSSL)
g++ banking.cpp -o banking -lssl -lcrypto

# Run
./banking