Show HN: C/C++ Cheatsheet – a modern, practical reference for C and C++ (github.com)

Hi HN,

I’m the creator of C/C++ Cheatsheet — a modern, practical reference for both C and C++ developers. It includes concise snippet-style explanations of core language features, advanced topics like coroutines and constexpr, system programming sections, debugging tools, and useful project setups. You can explore it online at https://cppcheatsheet.com/.

I built this to help both beginners and experienced engineers quickly find clear examples and explanations without digging through fragmented blogs or outdated docs. It’s open source, regularly maintained, and contributions are welcome on GitHub.

If you’ve ever wanted a lightweight, example-focused guide to: - Modern C++ (templates, lambdas, concepts) - C fundamentals and memory handling - System programming - Debugging & profiling …this site aims to be that resource.

Any feedback is welcome. Thank you.

4 comments

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pjmlp 5mo ago ↗

I haven't searched much, but failed to find anything related to bounds checking, or enabling hardned runtimes for C++, which I consider a must-have in any modern project.

Also probably something similar for C, like using SDS (https://github.com/antirez/sds) instead of standard library calls.

Other than that, great work.

nmaleki 5mo ago ↗

This is cool, but I usually expect a cheat sheet to be a 1 or 2 page pdf.

aeve890 5mo ago ↗

If you Google "modern c++" you will probably find ~c++11 tutorials and posts and less and less content on the latest c++ standards where some things considered "modern" a few years ago are already deprecated or not considered "best practices" anymore.

I'd check this[0] excellent mega rant about c++ and take the best parts to create a truly "contemporary c++" cheatsheet.

[0] https://youtu.be/7fGB-hjc2Gc?si=4bk2nKx2AXPYLJH7

Neywiny 5mo ago ↗

This isn't a cheat sheet. It's a guide.