IBM Softwareentwickler interview questions

I received test assignment and I attempted it. It is difficult its a very good experience for me and it's have 2 coding questions and we should attempt in c language

They ask: Your projects (very important) Basic DSA SQL (joins, queries) OOP concepts Sometimes 1 coding question 👉 Real experience: “Asked to explain projects + write code for prime number” “Discussed my OA solution + 1 easy leetcode question”