Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

relative path

A path measured from the folder you are currently in.

A relative path is resolved against the current working directory, so data/input.txt names a different file depending on where the program runs.

Read the full section →