OOP Console Projects - C# & Python

A collection of real-world console applications developed in C# and Python to strengthen Object-Oriented Programming (OOP), file handling, data structures, algorithms, exception handling, and problem-solving skills.

📌 Projects Included

1. 📚 Library Management System

A console application to manage books, borrowing, and returns with file persistence and custom sorting.

Key Concepts:

• Inheritance & Polymorphism
• Dictionary Collections
• File Handling
• Custom Sorting
• Encapsulation

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2. 🏦 Bank Account & Transaction Ledger

A mini banking system supporting deposits, withdrawals, transaction history, and account management.

Key Concepts:

• OOP
• Exception Handling
• File Handling
• Polymorphism
• Custom Search & Sorting

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3. 👨‍💼 Employee & Payroll Manager

Manage employee records, calculate salaries, generate payslips, and process CSV data.

Key Concepts:

• Inheritance
• Method Overriding
• CSV Parsing
• File Handling
• Manual Grouping
• Custom Sorting

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4. 📦 Inventory & Order Processing System

An inventory management system with order processing, stock tracking, and custom Stack & Queue implementation.

Key Concepts:

• Composition
• Stack & Queue
• Two-Pointer Algorithm
• File Handling
• Data Structures

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5. 🎓 Student Result Processing System

Processes student marks, calculates grades, generates report cards, and ranks students.

Key Concepts:

• OOP
• File Parsing
• Validation
• Aggregation
• Custom Sorting

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6. 📄 Log File Analyzer

Parses application logs, detects errors, generates alerts, and analyzes log statistics.

Key Concepts:

• File Parsing
• Dictionary
• Searching Algorithms
• Sliding Window
• Error Detection

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7. 📝 Task & Ticket Tracker

A console-based ticket management system supporting bug tracking, feature requests, and Kanban-style organization.

Key Concepts:

• Inheritance
• File Persistence
• Priority-Based Sorting
• Manual Grouping
• OOP

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8. 👥 Contact Book Management System

Manage contacts with validation, duplicate detection, search functionality, and persistent storage.

Key Concepts:

• Regular Expressions
• Validation
• File Handling
• Searching Algorithms
• OOP

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🛠️ Technologies Used

• C#
• Python
• Object-Oriented Programming (OOP)
• File Handling
• Data Structures
• Algorithms
• Exception Handling
• Collections
• Console Applications

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📂 Repository Structure

OOP-Console-Projects-CSharp-Python/
│
├── CSharp/
│   ├── Library-Management-System/
│   ├── Bank-Account-Transaction-Ledger/
│   ├── Employee-Payroll-Manager/
│   ├── Inventory-Order-Processing/
│   ├── Student-Result-Processing-System/
│   ├── Log-File-Analyzer/
│   ├── Task-Ticket-Tracker/
│   └── Contact-Book-Management-System/
│
├── Python/
│   ├── Library-Management-System/
│   ├── Bank-Account-Transaction-Ledger/
│   ├── Employee-Payroll-Manager/
│   ├── Inventory-Order-Processing/
│   ├── Student-Result-Processing-System/
│   ├── Log-File-Analyzer/
│   ├── Task-Ticket-Tracker/
│   └── Contact-Book-Management-System/
│
└── README.md

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🎯 Learning Outcomes

Through these projects, I practiced:

• Object-Oriented Programming (OOP)
• Inheritance, Polymorphism & Encapsulation
• File Reading & Writing
• Exception Handling
• Custom Sorting Algorithms
• Searching Algorithms
• Dictionaries & Collections
• Stack & Queue Implementation
• Data Validation
• Algorithmic Problem Solving
• Clean Code Practices

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🚀 Future Improvements

• Add Unit Tests
• Build GUI versions using Windows Forms / Tkinter
• Develop Web APIs using ASP.NET Core & Flask
• Integrate SQL Database
• Add Authentication & Logging
• Optimize algorithms and performance

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⭐ If you find these projects useful, consider giving this repository a star!