Libft

C project · library, libc

My own C standard library — the foundation every later 42 project is built on.

• 125/100grade
• 43functions

The problem

Write my own C standard library, used by every later 42 project.

What I built

• 23 libc functions (strlen, memmove, strlcat, atoi, calloc...).
• 11 extra helpers (split, strjoin, itoa, strtrim...).
• 9 linked-list functions for the bonus.

The hard part

Failing halfway without leaking. If ft_split ran out of memory partway through, the words already copied and the array itself were lost; it now frees everything it built before returning NULL, and ft_lstmap frees the content f just made when the new node can't be allocated. ft_calloc checks nmemb * size for overflow before calling malloc, so a huge request returns NULL instead of a smaller buffer.

Built with

• C
• Makefile
• valgrind
• Norminette

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