# String.char_at

## Function

Read the character at the specified character position.

## Syntax

```bt
string.char_at(index)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| index | Int | No | 0 | Character subscript, negative numbers will be treated as 0. |

## Return value

| Type | Description |
| ------ | ------ |
| String/Empty | Returns a single-character string when the subscript exists; returns Empty when out of bounds. |

## Example

```bt
text = 'hello'
result = text.char_at(1)

// Output: e
print result
```

## Notes

- ASCII strings are read as byte subscripts; non-ASCII strings are read as Unicode character subscripts.