# File Setup & Hello World

## Starting a File

Gauntlet mirrors Go's package-based compilation model. As such, every file must start with `package <name>`.

## Importing and Using Modules

Gauntlet's import syntax is:<br>

```fsharp
import "<modulename>" as <aliasname>
```

It is **required** that you give an alias to every module you impor&#x74;**.**

Once you have imported it, you can use it like you normally would in Golang.

If you imported `fmt` as such:

```go
import "fmt" as fmt
```

Then you must access it using whatever is on the right side of the "as" keyword (`fmt`):

```go
fmt.println("Hello World!")
```

## The "main" Function

{% hint style="info" %}
Functions are explained in more detail later
{% endhint %}

The `main` function is the entry point of every Gauntlet program; it is not required in every file. It must have a return type of `Unit`.

## Working Hello World Example

{% tabs %}
{% tab title="Gauntlet" %}

```fsharp
package main

import "fmt" as fmt

fun main(): Unit {
  fmt.println("Hello World!")
}
```

{% endtab %}

{% tab title="Transpiled" %}

```go
package main

import fmt "fmt"

func main() {
	fmt.Println("Hello World!")
}
```

{% endtab %}

{% tab title="Output" %}

```
Hello World!
```

{% endtab %}
{% endtabs %}


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