DiscountCoupon-LLD

# Discount Coupon System - Low Level Design A **comprehensive C++ implementation** of a discount coupon system that demonstrates object-oriented design principles and system architecture for e-commerce applications. ## System Design Features - **Coupon Management**: Complete lifecycle management for discount coupons including creation, validation, and expiration - **Discount Calculations**: Multiple discount types including percentage-based, fixed amount, and tiered discounts - **Validation System**: Robust coupon validation with expiration dates, usage limits, and user restrictions - **User Interaction**: Seamless integration with user accounts and purchase history ## Object-Oriented Design - **Clean Architecture**: Well-structured class hierarchy with clear separation of concerns - **Extensible Design**: Easy addition of new coupon types and discount strategies - **Data Encapsulation**: Proper use of access modifiers and data hiding principles - **Error Handling**: Comprehensive error handling for invalid coupons and edge cases ## Educational Value - **Interview Preparation**: Ideal for system design interviews and coding assessments - **Design Patterns**: Demonstrates common design patterns used in e-commerce systems - **Code Quality**: Clean, readable code with proper documentation and comments - **Scalability**: Architecture designed for easy extension and maintenance The implementation serves as an excellent reference for understanding how discount systems work in real-world e-commerce applications while showcasing best practices in C++ development.

A C++ implementation of a discount coupon system (Low-Level Design)