Historically, Rank 03 might have included generic threading exercises. However, the updated version (post-2023/2024) is far more structured. Here are the key changes:
This is the flagship project for Rank 03. In the updated curriculum, ft_printf is often the first major hurdle.
The updated grading scheme for Rank 03 is ruthless:
| Requirement | Points | Passing Needed? | | :--- | :--- | :--- | | Correct argument parsing | 5% | Yes | | No data races / no segfault | 25% | Mandatory | | No deadlock, no starvation | 25% | Mandatory | | Timings exact (meals within limits) | 40% | Mandatory | | Bonus: semaphores + processes | Extra 5% | No, but safe for backup | 42 exam rank 03 updated
Important: Previously, some students skipped the bonus. With the updated exam, skipping the bonus is fine if your mandatory is bulletproof. However, the bonus is recommended because the mandatory is tough to fully synchronize.
Since the update, these mistakes cause immediate failure:
| Mistake | Why It Fails Now |
| :--- | :--- |
| Using usleep(time_to_die) directly | Thread can die while sleeping; no immediate action |
| Not protecting printf | Data race → ThreadSanitizer kills program |
| Checking death every second | Missed exact death time (±10ms tolerance fails) |
| Forgetting to unlock mutex after death | Remaining threads hang → exam times out |
| Using time() instead of gettimeofday | Microsecond precision lost → timing mismatch | Historically, Rank 03 might have included generic threading
Pro tip: Always check
ft_usleepimplementation from successful 42 students on GitHub (e.g.,philosophers-42by mcombeau or nkolosov).
get_next_line
Possible third exercise (rare):
If you are currently navigating the rigorous, peer-to-peer curriculum of 42 School (including 42 Berlin, 42 Paris, 42 Wolfsburg, or any of the global campuses), you are likely familiar with the pressure of the Exam Rank system. Among all the rank milestones, Exam Rank 03 is notorious for being a major filter. With the 42 exam rank 03 updated curriculum and recent changes to the evaluation process, students need fresh, accurate information.
This article dissects everything you need to know: the new project structure, evaluation criteria, common pitfalls, and a step-by-step strategy to validate your Rank 03 on the first attempt.
Within the 42 exam shell, the exercise is simply called philo (not philosophers, as in the project). However, the subject is identical to the philosophers project, with one twist: Since the update, these mistakes cause immediate failure:
The exam subject removes all comments and helpful hints. You are given only the bare minimum: the function prototypes, the arguments, and the expected output format.