Hello, World: A History Long-Sleeve

The most famous program in computer science, rendered across 40 years of language evolution. From BCPL (1967) to C (1972) to C++ (1985) to Python (1991) to Rust (2010) — each "Hello, World" appears in that language's characteristic syntax style.

Back print: the full timeline. Chest print: the original K&R C version.

The Vibe: "I speak 10 languages." — For programmers, CS students, and history-of-computing buffs.