Last time, we learned about variable scope - how variables exist in different "spaces" within our Go 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 calculateTotal uses addNumbers?
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 getTotal relies on getTax to do part of its work?
Functions can call multiple other functions! Here's an example where one function uses several helpers:
The function used here formats text by replacing placeholders like and with actual values, then returns the formatted string.
