Sijmen’s homepage

A programmer for a living and for fun, but I also enjoy reading, music, games and other things. This page serves mostly as a hub of links to other places.

My name is pronounced /ˈsɛimən/, similar to Simon but certainly not Sidgemen.

• Advent of Code 2024 with C (2024)
• A TOTP generator in C (2024)
• Casey’s interview question #4, circle drawing (2023)
• Casey’s interview question #3, flood fill check (2023)
• Casey’s interview question #2, strcpy (2023)
• Casey’s interview question #1, rectangular copy (2023)
• Using ffmpeg for Advent of Code visualisation (2022)
• The Internet: decentralised since it was still called ARPANET
• Windows 11: a survey of text boxes (2021)
• Low-tech SMS gateway with Twilio and OpenBSD (2019)

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