Discover the world of C programming with this comprehensive guide from renowned author Yashavant Kanetkar, now in its milestone 21st edition. This bestseller, having sold over 3 million copies, continues to be the authentic reference for learning the C programming language. The latest edition includes cutting-edge topics like ChatGPT programming and security programming, making it relevant for modern developers. Published by BPB Publications, this book serves as an excellent resource for students preparing for 2026 examinations and programming enthusiasts alike.