How do I specify a path with libcurl for file uploads/downloads? or What's the correct way to specify

Yo! libcurl specify path stuff tripped me up too.

Short answer: Open the file yourself. Long answer:

- `CURLOPT_READDATA`: Needs a FILE* from `fopen()`.
- `CURLOPT_WRITEDATA`: Same deal.
- Paths? `/` works everywhere, but Windows devs might prefer `\\`.

Bonus: If you’re on Windows, watch out for file permissions. Sometimes libcurl fails silently if it can’t access the file.

Here’s a solid example: https://curl.se/libcurl/c/fileupload.html