block 02 subroutines and recursion

As your programs grow in size and complexity, writing one long, continuous script quickly becomes impossible to manage and debug. In this block, you will learn how to break down large problems into smaller, self-contained, and reusable blocks of code known as subroutines. You will explore how to pass data into these subroutines securely, protect your variables using local scope, and organise your software like a professional engineer. Finally, you will dive into recursion - a powerful and elegant programming technique where a subroutine calls itself to solve complex computational problems.