42 Exam 06 Jun 2026

: When a client sends a message, prefix it with "client %d: " and broadcast it to everyone else.

: Since the server runs indefinitely, any small leak in your message buffering will eventually crash the evaluator's script. 42 Exam 06

Write a program that takes a number_of_philosophers and a time_to_die as arguments. Each philosopher is a process. They must eat, sleep, and think. If a philosopher doesn’t start eating before time_to_die milliseconds after their last meal, they die and the simulation stops. : When a client sends a message, prefix

: You are usually provided with extract_message and str_join in the provided main.c file during the exam to help manage string buffers. Strategy & Tips Each philosopher is a process

: While 42 usually frowns on them, check the specific exam rules. Often, a single struct to hold your client data and FD sets is the cleanest approach. Fatal Errors : If any system call fails (like ), the requirement is usually to write "Fatal error" to and exit with 1. Test with Telnet/Netcat : During the exam, open multiple terminals and use nc localhost [port] to simulate multiple clients interacting at once. Common Pitfalls The Message Prefix : Forgetting to add client [ID]: