The Exam 01 in the 42 Piscine is the second major milestone of the selection process, typically held on the second Friday of the intensive four-week coding bootcamp. Unlike the first exam (Exam 00), which often focuses on basic terminal commands and shell scripting, Exam 01 is widely considered the true "intro to C" test. Key Logistics & Rules
Exam 01 focuses on the fundamentals you should have mastered during the first 7–10 days. The level of difficulty scales; you must pass a level to unlock the next. Level 0: The Basics exam 01 piscine 42 exclusive
As I walked through the streets of Paris, I finally found myself standing in front of a nondescript building with a small sign that read "42". I had heard that this was the headquarters of the prestigious coding school, and that the exam would be held here. The Exam 01 in the 42 Piscine is
exclusive Problem in 42 PiscineThe 42 Piscine examination system evaluates fundamental C programming skills under strict memory and function usage constraints. Exam 01 often features a problem named exclusive (or ft_exclusive), requiring the implementation of a function that returns a bitwise exclusive OR (XOR) operation at the byte level, while adhering to forbidden standard library functions. This paper dissects the problem, provides a compliant solution, and discusses common mistakes and testing strategies. Move to another task or problem, then return with fresh eyes
Study inter and union: These two problems are classic Exam 01 hurdles. They test your ability to handle two strings and nested loops.
Behavior:
Return the bitwise XOR of a and b.