Learn C++: Code & Compiler

Learn Simpli

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About this app

Master C++ from your first "Hello, World" to modern C++20 — pointers, the STL and beyond, all in one app.

📚 Structured C++ lessons
Learn step by step: Subject to Topic to Subtopic. Each lesson gives clear theory, guided practice and a quick summary, with syntax-highlighted, runnable code and plain-English explanations. Cover variables and references, pointers and memory management, classes and OOP, inheritance and polymorphism, templates, the Standard Template Library, RAII and smart pointers, lambdas, move semantics and modern C++11/17/20 features.

💻 Built-in compiler & editor
Write and run C++ right on your phone with the online code runner — no setup needed. Solve coding problems backed by hidden test cases and reference solutions, and let the AI check your output. The same runner also supports C, Python, Java, Go, Rust and more.

🧠 Practice & test yourself
Sharpen skills with multiple-choice quizzes that climb from Easy to Medium to Hard, each answer explained. Take timed mock tests mixing theory, MCQs and coding, get result analytics with improvement tips, and review quiz history with filters and re-attempts.

🤖 Smart Mentor AI tutor
Ask anything about C++ and get instant, lesson-aware answers. Snap a photo of code or a diagram for help, rehearse with mock-interview mode, and follow an AI-built 7-day study plan covering concept review, coding practice and interviews.

📊 Track your progress
Watch scores over time, study time and completed topics. Spot weak areas, keep daily streaks, hit goals and climb global and per-subject leaderboards. A daily check-in quiz and AI revision card keep you consistent.

🌐 Built for everyone
Works offline. Light and dark themes. Interface available in English, Hindi, Kannada, Tamil and Telugu, while code and technical terms stay intact during translation. Stay current with a Today's Updates tech news feed.

Free vs Pro
Free includes starter topics, daily practice and limited AI help. Pro unlocks every topic and difficulty, unlimited practice, full quiz history, custom topic tests and higher AI limits. Choose a 6-month prepaid plan or an auto-renewing monthly plan, with a free trial to start.

C++ and other language names and logos are trademarks of their respective owners. This app is independent and is not affiliated with, endorsed by or sponsored by them.

What's new

🎯 Daily Knowledge Check — A quick 10-question check opens once a day to test.

🧩 Knowledge Check Corner — New home shortcuts for Quick Test, Practice Quiz & Daily Revision.

✅ Answers & Explanations — Clear explanation right after you pick an option in quizzes.

🔓 All Quiz Levels Open — Explore every difficulty level and start any one you like.

📰 Smarter News & Updates — Home shows the 5 most-read stories.