How to Implement the Strategy Design Pattern in C++

The Strategy design pattern is a cornerstone of flexible software design, enabling you to swap algorithms or behaviors at runtime without altering the core structure of your application. Picture a GPS app that lets you switch between driving, walking, or biking routes - each mode is a strategy, and the app adapts seamlessly. In this article, we’ll explore how to implement the Strategy pattern in C++ using modern practices, complete with step-by-step instructions and two real-world examples: a text formatter and a payment processor.