C++ Code Checker
Check C++ for unsafe string functions, raw new/delete, C-style casts, NULL and other modern C++ issues. Free and private: runs in your browser.
Paste C++ code to find memory-safety and modernisation issues, each explained with a safer alternative.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Check a function before opening a pull request.
- Explain a review comment with numbers instead of opinions.
- Find the riskiest code to refactor first.
Frequently asked questions
Why avoid raw new and delete?
Manual memory management leaks on early returns and exceptions. std::make_unique and std::make_shared (RAII) free memory automatically.
Is the C++ Code Checker free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
How accurate is a browser-based code check?
It uses fast heuristics on the snippet you paste, so it is great for quick feedback. For whole repositories, cross-file analysis and history, run a full CodeInspector scan.
Related tools
Checking one snippet is a start. Scan your whole repository for free with CodeInspector.