C-kata is an online platform to practice the C programming language through challenges of different difficulty levels with automatic solution checking.
No. Everything runs in the browser: code editor, compilation, and test execution.
XP (experience points) are earned for solving challenges. As you gain XP, your grade increases: Siran (Novice) → Kyu (Apprentice) → Dan (Journeyman) → Sensei (Master).
CKC are in-platform credits. You earn them for solving challenges or buy them directly. 1 CKC = €0.10
On the Pricing page. You can choose packages (€10, €25, €50) or a custom amount. Payments are made in EUR (Visa/Mastercard).
Your code is compiled, executed in a sandbox, and checked against test cases. Results are shown instantly.
Refunds are only possible if a technical issue prevented your purchase from being completed.
Yes, the editor works in mobile browsers, but the best experience is on desktop or laptop.
C-kata is part of a broader ecosystem. To practice C++ or C#, you need to use our dedicated platforms. Links to them are available in the top menu and in the footer. Each platform uses its own internal tokens, which can only be used on the platform where they were purchased. You can learn more about features and pricing on: c-magus.com (https://c-magus.com/home) (C++) and csharpexplore.com (https://csharpexplore.com/home) (C#).
No. Your code stays private. You can share it manually if you want feedback.