After taking a break from school, I studied various things and came across programming. I first learned Python and found it fun, so I moved on to Pandas, Crawling, and NumPy, and became very interested in data and AI. I was going to start studying deep learning, but when I heard that the C language was essential, I searched and met Professor Hong Jeong-mo on YouTube for the first time. I just thought of learning the C language as a sideline. Even when I was studying Python, I wasn't interested in how computers worked. I didn't know the internal processes, but I thought I could do it somehow. However, after taking this class, my thoughts completely changed. I was able to think about and learn how computers work and how and why languages were created. My attitude toward coding really changed. I really liked the easy and thorough explanations. I learned not only the C language, but also the mindset of a programmer. Thank you so much, professor.