Practice · 1 of 2
Byte-Exact Save
Implement kv_save: write the documented layout with explicit byte stores — magic, version, count (LE), all 16 slots (key NUL-padded, value i64 LE, live byte), then the checksum. The file must be exactly 669 bytes for KV_CAP 16.
Difficulty: intermediate
Press Submit to check your solution.
Back to lesson: Practice: Persistence & the Hostile File