Refactoring Repeated Code

Repeated code may work, but it becomes harder to update and easier to break. This Block shows you how to spot duplication, separate the parts that stay the same from the values that change, and move repeated behavior into clear helper functions and loops. You will refactor printed reports, repeated calculations, and menu-style code while keeping the program's behavior unchanged.

What you will learn:

• Recognize repeated code and identify the shared pattern
• Extract repeated actions into reusable functions
• Turn changing values into clear function parameters
• Use loops when the same action applies to several items
• Combine functions and loops without adding unnecessary complexity
• Refactor in small steps and verify that output and returned values stay the same

Leave with a practical refactoring routine: find the duplication, name the task, extract the changing values, replace each copy carefully, and check the behavior after every step.