Siddhartha Rao is an author of computer programming books about whom limited public information is available; his nationality, dates of birth and death, and educational background are not clearly documented. The only confirmed work is "21 Days to Learn C++ (7th Edition)," a computer and programming study book intended for readers who want a systematic introduction to the C++ language. Judging from the approach suggested by the title, the author uses a staged, day-by-day teaching structure that divides language fundamentals and programming practice into progressive units, allowing readers to arrange their own learning pace. Tutorials of this kind usually emphasize example-driven content and hands-on exercises, helping beginners quickly build an intuitive understanding of syntax, program structure, and basic programming thinking. As his only work in the library, this book is the main basis for understanding his writing direction.
