42 Exam 06 Guide

Failing to free() allocated memory will cost you points or result in a fail.

: The subject explicitly requires printing "Fatal error\n" to stderr and exiting with status 1 if any system call fails. Do not use perror() .

Have you already attempted the exam or reviewed the ? 42 Exam 06

: The server must strictly adhere to specific output strings for server-side errors, client connections, client disconnections, and message broadcasting. Missing a newline or a single character will fail the automated grader (Moulinette).

: Do not rely on copy-pasting code templates during your preparation. Code it from memory 3 to 5 times before registering for the exam. Failing to free() allocated memory will cost you

A client might send Hello\n broken into two packets: He and llo\n .

Ensuring messages are sent to everyone except the sender. Have you already attempted the exam or reviewed the

Add the new socket descriptor to your master monitoring set.

: You can test your server using nc (Netcat) in multiple terminal windows to simulate different clients.

: You have 3 hours to pass Exam 06. Practice writing the server completely from scratch on a blank text editor until you can write, debug, and run it within 40 minutes.

at 42 School involves creating a simple multi-client chat server, typically referred to as mini_serv . The goal is to build a program in C that listens for incoming connections on a specific port and facilitates communication between multiple connected clients. Project Overview