# String.to_uppercase

## Function

Convert the string to uppercase.

## Syntax

```bt
string.to_uppercase()
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| String | Returns the new string after capitalization. |

## Example

```bt
text = 'Hello BT'
result = text.to_uppercase()

// Output: HELLO BT
print result
```

## Notes

- Use Rust string capitalization conversion rules.