Show HN: C From Scratch – Learn safety-critical C with prove-first methodology https://bit.ly/466rkV1

Show HN: C From Scratch – Learn safety-critical C with prove-first methodology Seven modules teaching C the way safety-critical systems are actually built: MATH → STRUCT → CODE → TEST. Each module answers one question: Does it exist? (Pulse), Is it normal? (Baseline), Is it regular? (Timing), Is it trending? (Drift), Which sensor to trust? (Consensus), How to handle overflow? (Pressure), What do we do about it? (Mode). Every module is closed (no dependencies), total (handles all inputs), deterministic, and O(1). 83 tests passing. Built this after 30 years in UNIX systems. Wanted something that teaches the rigour behind certified systems without requiring a decade of on-the-job learning first. MIT licensed. Feedback welcome. https://bit.ly/4rxhjJ9 January 25, 2026 at 01:17AM