I learned and used it in college, and I learned and used it again. For me, it is the C language that makes me feel that I am still lacking every time I learn and look for it. It is not easy to find the lectures I need related to the C language, but I came to Inflearn after searching for them. I chose it without asking or questioning. I have grown a lot with the books of the developer who is easy to read for a long time, so I am excited to study hard with a new lecture. While listening to the lecture, I have organized the reference content such as the standard document related to threads and VS support well. Thank you. Starting with the introduction of "Section 0. Before Entering" First, I will listen to the lecture on multi-threading and security first and read the lecture from the beginning. Thank you. Happy New Year, developer who is easy to read~ And happy New Year to everyone who reads this article~