nothing allocated yet
nothing written yet
A block-based notional machine for C
Version 1.0.0
Built on the SF-CESK abstract machine.
© 2026 L-Workshop. All rights reserved. Proprietary — see LICENSE.
This example
Your workspace already has blocks. Replace them with this example? One Undo (Ctrl+Z) brings the previous program back.
This records what you build and what the machine does — block creations, moves and deletions, and one line per step of the machine. It never records the text of your program, what it printed, the contents of any field, your name, or the time of day. Everything stays in this browser until you press Export yourself. You can see all of it before you do, and delete it at any time.