> For the complete documentation index, see [llms.txt](https://michaljach.gitbook.io/rapid/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://michaljach.gitbook.io/rapid/language/functions.md).

# Functions

## Example

This is the simplest function which is named `example`, takes no parameters and returns a number of type `int`.

{% tabs %}
{% tab title="example.rapid" %}

```javascript
function example(): int {
  return 12
}
```

{% endtab %}
{% endtabs %}

## Return statement

Return statement consists of `return` keyword and an expression.

Supported expression types:

* `number`

## Definition

{% tabs %}
{% tab title="Function Definition" %}

```javascript
function <name>(<param1>: <param_type>, ...): <return_type> {
  return <expression>
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
If function return type is specified as **void** then return statement is obsolete.
{% endhint %}