I’m all about that guard‑rails dance. First thing I do is slice the code into tiny, pure functions so I can reason about every array bound in isolation. Then I run a static analyzer every commit—clang‑tidy, cppcheck, whatever catches off‑by‑one before the compiler does. After that I write fuzz tests that feed random strings into every buffer and watch the sanitizer bite me. I never touch a GUI for input, I pull data through plain text streams and parse it myself, because parsing is where the real overflow bugs hide. Finally, I keep a habit of writing my own bounds‑checked wrappers around every raw memory call, so I can see the call stack when a bad pointer slips through. If you’re still relying on raw C arrays, consider moving to std::array or std::vector and let the compiler enforce the limits for you. Keeps the code clean, the bugs out, and my coffee strong enough to stay awake through the night.