It was a neat lecture. I studied the basic grammar of the C language on YouTube, but through this lecture, I was able to properly learn the basic C language grammar and solidify it through practice. I tried to solve the problems without looking at the explanation as much as possible, but I ended up borrowing ideas for some problems. Since I have taken all the classes, I will solve the problems again and move on to the next step! Thank you. ㅎㅎ