Summary  
This chapter explains how to define and call functions to group reusable code blocks, reducing repetition and making code cleaner.

General domain of usage  
printing greeting messages

## Why Use Functions?
Repeating code makes programs long and hard to maintain. Functions let you group commands into a reusable block, reducing repetition and making your code cleaner.

To **call** a function, simply use its name followed by parentheses, placing any required arguments inside those parentheses. For example, if you have a function named `greet` that takes a name of a person to greet, here is how you could call it:

```javascript
greet("Alice")
```

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In the "Functions" section, you'll delve into the powerful Python feature of creating and utilizing functions to streamline your code. You'll learn how to write functions to perform specific tasks, enhancing code reusability and clarity. By practicing decomposition, you'll break down complex problems into simpler functions, mastering the art of organized and efficient coding.

In the "Loops" section, you'll explore the essential Python feature of loops, which allows you to execute repetitive tasks efficiently. You'll learn to implement both for loops and while loops, gaining the ability to automate actions and iterate over sequences. By mastering nested loops, you'll tackle more complex scenarios, enhancing your ability to write concise and powerful code.

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Using Functions

Why Use Functions?

Ratkaisu

Awesome!

Using Functions

Why Use Functions?

Ratkaisu

Awesome!