As someone who has completed this course, along with "Tough C Linear Data Structures" and "Minimal C++ Course for C Developers," I am leaving this review for others who are considering taking this course or for C/C++ developers who are looking to challenge themselves. The instructor often mentions GPT during the lectures, and inspired by that, I incorporated GPT into my studies. After completing this C course once, I minimized re-listening to the lectures for review. Instead, I trained GPT with the examples provided by the instructor and asked it to give me 10 problems every day from start to finish. I started with easier problems to warm up and gradually increased the difficulty. When I struggled to understand certain parts, I would revisit those lecture sections at double speed. I kept requesting and solving problems to engrave them in my mind and hands. Also, I made sure to spend at least 30 minutes to 1 hour trying to solve the practice examples in the lectures on my own. Some problems were solved within 5 minutes, while others, despite appearing easy, took over an hour before I reluctantly looked at the answer. If I had to look at the answer, I would ask GPT to generate similar problems for review. Since I decided to do it the "tough" way, I worked hard with the mindset of showing how tough I could be. It was a truly great course for me. I highly recommend it! Everyone, fighting!