Min — Sone385engsub Convert020002

// ---------- 3. Range checks ---------- if (hour > 23) return -2; if (minute > 59) return -3; if (second > 59) return -3;

Use -Os for size‑optimised builds; the function inlines cleanly at -O2 and higher. sone385engsub convert020002 min

Replace file names and times as appropriate to your needs. // ---------- 3