Hello, explorer! Today is about refactoring. Think of it as organizing your favorite tool chest. We're going to learn about Extract Method, Rename Method, and Substitute Algorithm refactorings in C++. Refactoring helps us tidy up our code, making it cleaner and more maintainable, all while preserving its functionality.

Consider having a complicated blueprint. Refactoring changes it into a clearer drawing. Our code is rearranged to enhance readability and efficiency without altering its behavior. Let's examine a short code snippet before and after refactoring:

Both code versions perform the same function, but the refactored version is simpler and easier to comprehend!

Imagine a large set of instructions for setting up a desktop. The Extract Method technique is like having separate instructions for the monitor, CPU, keyboard, etc., instead of one large set of instructions. Observe this code: