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

Oh man, libcurl specify path woes. Been there!

You’re missing the file handle part. libcurl doesn’t open files for you—it just reads/writes to whatever handle you give it. So:

```c
FILE *up = fopen("/path/to/file", "rb");
curl_easy_setopt(curl, CURLOPT_READDATA, up);
```

For paths, `/` is universal, but Windows devs might freak out if you don’t use `\\`. Honestly, though, libcurl doesn’t care.

PS: Don’t forget to `fclose()` later!