> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/programming_tasks/c/character_codes.md).

# Character codes

```ruby
say 'a'.ord     # => 97
say 97.chr      # => 'a'
```