📘 Enhanced Bank Record System

A mini C++ project aimed at simulating a fully functional bank system with account management, secure login, transaction tracking, and customer service features. This project represents a complete overhaul of the original legacy codebase in New_Bank_Record.cpp, culminating in a modern, modular, and user-friendly version in BankSystem.cpp.

A demo video and some screenshots are attached for reference.

🤝Contributors

1. Dhruvam Panchal - 202401415
2. Dwij Patel - 202401418
3. Shubh Patel - 202401478
4. Yashraj Solanki - 202401481



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🚀 Project Overview

The Bank Record System is a command-line interface (CLI) application that enables banking operations such as:

• Creating/modifying/searching bank accounts
• Deposits, withdrawals, fund transfers
• Managing customer and employee logins
• Service request queuing
• Transaction history tracking

This project demonstrates best practices in object-oriented design, file handling, data structures, and UI improvement in C++.

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🔄 Major Changes from Legacy (New_Bank_Record.cpp) to Upgraded (BankSystem.cpp)

Feature	Legacy (New_Bank_Record.cpp)	Upgraded (BankSystem.cpp)
UI/UX	Monochrome CLI, static colors, limited options	Color-coded UI, structured menus, improved instructions
Modularization	Flat structure, spaghetti code	Fully OOP with encapsulated classes and functions
Data Structures	Arrays, flat file parsing	BST, map, vector, stack, queue
Security	Hardcoded login credentials	Password masking, hashed credentials (extension-ready)
Performance	Line-by-line CSV rewrites	In-memory BST with efficient lookups and updates
Data Persistence	Fragile CSV management	Cleaner CSV handling, separate credential files
Customer Service	Not implemented	Implemented via service queue (FIFO)
Transaction History	Absent	Supported via vector and stack tracking
Code Readability	Poor	Highly readable, maintainable structure

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🧠 In-Depth Analysis

💾 Data Structures Used

Structure	Purpose
map<string, string>	Stores account & employee login credentials (hash map for O(1) lookup)
vector<string>	Maintains transaction history (append-only log)
stack<string>	Tracks recent transactions for LIFO viewing
queue<string>	Handles customer service requests (FIFO discipline)
BST (Binary Search Tree)	Core storage of account records for O(log n) search, insert, modify

Binary Search Tree (BST) for Account Records

• Why BST? Efficient searching, in-order display, and scalability for large datasets.
• Tradeoff: Requires memory and additional code complexity compared to flat files.
• Operations Implemented:
  • insert()
  • search()
  • modify()
  • inorder() traversal for listing accounts

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🎯 Feature Highlights

• Account Creation & Modification

  • Fully guided input
  • Duplicate checks
  • Password protection

• Employee and Customer Roles

  • Separate login interfaces
  • Role-based menus and features

• Transaction Management

  • Deposit, withdraw, and fund transfer
  • Balance update logic with timestamp logging

• Transaction History

  • Maintained using both vector and stack
  • Last 10 transactions available to user

• Customer Service Queue

  • Request submission
  • FIFO processing by employees
  • Service type categorization

• UI & Experience

  • Color-coded CLI using SetConsoleTextAttribute()
  • Consistent screen clearing and user prompts
  • Loading screen and instruction screens enhance user flow

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⚖️ Tradeoffs Made

Decision	Tradeoff Justification
BST over flat file search	Better performance, but increased code complexity
Using console-based UI	Simplified deployment, less interactive than GUI
CSV storage instead of DB	Lightweight, portable, but less robust
Windows-only conio.h + WinAPI	Simplified development, but not cross-platform
No real password encryption	Left open for extension; current approach masks password input

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📁 Project Structure

Bank-Management-System/
├── BankSystem.cpp          # Final upgraded implementation
├── New_Bank_Record.cpp     # Original legacy code
├── Account_info.csv        # Stores user credentials
├── Employee_info.csv       # Stores employee credentials
├── Bank_Record.csv         # Stores all account data
└── README.md               # This file

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📌 Future Enhancements

• Password encryption with hashing
• Multi-platform support (remove WinAPI/conio dependency)
• GUI version using Qt or web frontend
• Admin dashboard for analytics

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📄 License

This project is open-source and free to use under the MIT License.

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