Last time, we learned about variable scope - how variables exist in different "spaces" within our programs. Now let's explore something powerful: functions can actually call other functions!
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Have you ever wondered if functions can work together like a team?
When one function calls another, it's like asking a colleague to help with part of the work. The first function pauses, lets the second function do its job, then continues with the result.
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Can you see how calculate_total uses add_numbers?
This creates powerful combinations! We can build complex programs by combining simple functions. Each function handles one specific task, making our code easier to understand and debug.
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Notice how get_total relies on get_tax to do part of its work?
Functions can call multiple other functions! Here's an example where one function uses several helpers:
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How many helper functions does use?
