42 Exam Rank 03 [updated] Here

The fluorescent lights of the 42 cluster hummed with a low, electric anxiety. It was Rank 03 day—the first real gatekeeper of the curriculum. For Leo, the screen in front of him wasn't just a terminal; it was a digital arena where his logic was about to be stress-tested.

• ft_putchar
• ft_putstr
• ft_putnbr (and handling INT_MIN)
• ft_puthex (for %x and %X)

• Difficulty: Hard (The Destroyer)
• The Goal: Write a program that reads commands from stdin, executes them using execve, and handles paths like a mini bash shell.
• Note: In some 42 curricula, Rank 03 asks for a "Micro Shell" (pipeline-less shell) or get_next_line with multiple file descriptors. Check your specific syllabus, but generally, you are writing a program that takes a command line, splits it, and executes the binary.

1. Function Prototype: int ft_printf(const char *str, ...);
2. Initialization: Declare a va_list variable and a counter for the number of characters printed.
3. The Loop: Iterate through the string str.
4. Condition A (Normal Char): If the current character is not %, print it using write() and increment the counter.
5. Condition B (Format Specifier): If the current character is %: