If you don't have access to any computer running windows, linux, or macos then I recommend buying an old Dell or Lenovo laptop on ebay for <$100 and putting a lightweight linux on it.
It doesn't take much computing power to run a c compiler and a text editor, you can probably find something suitable for less than $50 on your local Craigslist.
If you don't have access to any computer running windows, linux, or macos then I recommend buying an old Dell or Lenovo laptop on ebay for <$100 and putting a lightweight linux on it.
It doesn't take much computing power to run a c compiler and a text editor, you can probably find something suitable for less than $50 on your local Craigslist.