Two parallel learn-C courses, both runnable in your browser. Pick one and start reading - every code sample on every page is editable and compiles in-browser via WebAssembly. No signup. No tracking.
K&R 2e companion →
A hand-revised walkthrough of The C Programming Language (Kernighan & Ritchie, 2nd edition, 1988) - every section paraphrased, every example runnable, every K&R exercise solved.
antirez · Let’s Learn C →
Companion notes to Salvatore Sanfilippo's Let’s Learn C video series (37 episodes). Each lesson distils one video into a focused walkthrough with runnable code, modern-C notes, links back to the source video, and cross-references to K&R.