Task: A program (not just a function) that takes command-line arguments and prints the number of arguments passed. Example: ./a.out 1 2 3 -> prints 3. Logic: Use argc (argument count). Handle the case where argc is 1 (program name only, print 0). Convert the integer count to char to print it (using putchar logic).

There is a training tool on GitHub:
👉 42-Extrem/42_exam
This simulates the exam environment and includes Rank 02 subjects and corrections.

GitHub repos give you the code, but they don't give you the mindset. Here are three psychological traps that fail students even when they have studied every "exam rank 02 github" repo: