→ C Core syntax, arrays, pointers, memory management, and 40 structured tests in a warm, beginner-friendly path. → C++ Object-oriented programming, STL concepts, and modern C++ topics presented with a cleaner, deeper roadmap. → C# C# fundamentals, clean syntax, and application-focused exercises with a softer, polished visual treatment. → Python Python fundamentals, data structures, OOP, advanced topics, and a full test path with interactive quizzes from basics to mixed challenges.