Turbo-Mart-POS-Programming-Paradigms.pptx

Programming a pos system

1. Turbo Mart POS: Programming Paradigms This presentation explores different programming paradigms used in the development of the Turbo Mart POS system. by Jay Kumar Yadav

2. Procedural Programming Basic I/O The system accepts user input for product entry, including item name, quantity, and price. Conditional Statements Validating user input, such as checking for negative prices or ensuring correct product quantity. Control Statements Looping through products during a transaction to calculate the total price. Functions Functions encapsulate specific logic, like calculating total price based on quantity and tax rate.

3. Object-Oriented Programming (OOP) OOP organizes code into objects, which contain data and behavior. Encapsulation: Hiding data within classes to control access. Inheritance: Reusing code through parent-child relationships. Polymorphism: Using the same function name for different implementations.

4. Features of OOP in Turbo Mart POS Classes and Objects: class Product {     public string Name { get; set; }     public decimal Price { get; set; }     public int Quantity { get; set; } } Encapsulation: Using private fields and public properties to control data access. Inheritance: A Receipt class inheriting from a Transaction class. Polymorphism: Overriding a method to generate receipts in different formats (text, PDF). Abstraction: Hiding database queries behind a data access layer.

5. Event-Driven Programming (EDP) EDP is a paradigm where the flow of the program is determined by events (user actions, sensor inputs, etc.). UI-based interaction: The POS system is designed for user interaction through a graphical interface. Event listeners and handlers: The system uses event listeners to detect user actions, such as button clicks, and triggers corresponding handlers to perform specific actions. Real-time updates: The system updates the total price dynamically as items are added to the cart, providing immediate feedback to the user.

6. Key Takeaways Understanding various programming paradigms enables developers to choose the most appropriate approach for building robust and efficient POS systems.

7. Features of Event-Driven Programming in Turbo Mart POS UI-Focused: Windows Forms-based interface for easy user interaction. Event Handlers: Handling button clicks for adding products. Event Listeners: private void btnAddProduct_Click(object sender, EventArgs e) {     // Code to add product to the cart } Real-Time Updates: Updating the total price dynamically as items are added.

8. Features of Event-Driven Programming in Turbo Mart POS 1 UI-Focused: Windows Forms-based interface for easy user interaction. 2 Event Handlers: Handling buttn clicks for adding products. 3 Event Listeners: private void btnAddProduct_Click(object sender, EventArgs e) {     // Code to add product to the cart } Real-Time Updates: Updating the total price dynamically as items are added.

9. Relationship Between the Three Paradigms Procedural + OOP: Procedural functions are encapsulated within classes. OOP + Event-Driven: Objects (products, transactions) respond to UI events. Example: Adding two numbers in different paradigms: Procedural: Uses a function. OOP: Encapsulated within a class method. Event-Driven: Triggers when a button is clicked.

10. Relationship Between the Three Paradigms Procedural + OOP: Procedural functions are encapsulated within classes. OOP + Event-Driven: Objects (products, transactions) respond to UI events. Example: Adding two numbers in different paradigms: Procedural: Uses a function. OOP: Encapsulated within a class method. Event-Driven: Triggers when a button is clicked.

11. Feature Procedural Object-Oriented Event-Driven Data Handling Uses variables & functions Uses objects & classes Event-based data management Code Structure Linear & modular Organized into classes UI-driven interactions Reusability Limited High (inheritance, polymorphism) Moderate Use in POS System Basic calculations Managing products & transactions Handling user interactions  Comparison of Paradigms in Turbo Mart POS 

12. Conclusion Procedural, Object-Oriented, and Event-Driven paradigms all contribute to an efficient POS system. Using a hybrid approach ensures maintainability, usability, and scalability . The Turbo Mart POS System successfully integrates these paradigms to provide an effective retail solution.

13. References Microsoft Docs (2024). Object-Oriented Programming Concepts in C#. Available at: https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/object-oriented-programming (Accessed: 24 February 2025). GeeksforGeeks (2024). Procedural vs. Object-Oriented vs. Event-Driven Programming. Available at: https://www.geeksforgeeks.org/procedural-vs-object-oriented-vs-event-driven-programming/ (Accessed: 24 February 2025). Oracle (2024). Understanding Java Event-Driven Programming. Available at: https://docs.oracle.com/javase/tutorial/uiswing/events/ (Accessed: 24 February 2025). W3Schools (2024). Introduction to Programming Paradigms. Available at: https://www.w3schools.com/cpp/cpp_oop.asp (Accessed: 24 February 2025).