The libft project is the first one of my journey as a 42 student and is going to play a crucial role in upcoming assignments, since the library created here is going to be used in future C projects. Here, I created my very first C library from scratch.

This project pushed me to dig deep into how the original replicated functions work, helping me develop a comprehensive understanding of their inner workings and how to enhance them. It's not just about meeting project requirements; it's about aiming for excellence and crafting a library that I will use in future projects.

• Reminder: ❗️ You can check all my 42 projects at 42 Cursus

Table of Contents

Makefile and Header File
Makefile	The Makefile for building the libft library.	libft.h	The header file containing function prototypes and necessary definitions.

Original Functions
Character Classification
ft_isalnum.c	Check if a character is alphanumeric.	ft_isalpha.c	Check if a character is alphabetic.
ft_isascii.c	Check if a character is an ASCII character.	ft_isdigit.c	Check if a character is a digit.
ft_isprint.c	Check if a character is a printable character.
Case conversion
ft_tolower.c	Convert a character to lowercase.	ft_toupper.c	Convert a character to uppercase.
String Manipulation
ft_strlen.c	Calculate the length of a string.	ft_strlcpy.c	Safely copy a string.
ft_strlcat.c	Safely concatenate strings	ft_atoi.c	Convert a string to an integer.
String Search
ft_strnstr.c	Locate a substring in a string.	ft_strchr.c	Locate the first occurrence of a character in a string.
ft_strncmp.c	Compare two strings up to a specified number of characters.	ft_strrchr.c	Locate the last occurrence of a character in a string.
Memory Manipulation
ft_memset.c	Fill memory with a constant byte.	ft_bzero.c	Set the first `n` bytes of memory to zero.
ft_memcpy.c	Copy memory area.	ft_memmove.c	Copy memory area taking overlapping into account.
ft_memchr.c	Locate the first occurrence of a byte in memory.	ft_memcmp.c	Compare memory areas.
ft_calloc.c	Allocate and clear memory for an array.	ft_strdup.c	Duplicate a string.

Additional Functions
ft_substr.c	Extract a substring from a string.	ft_strdup.c	Concatenate two strings.
ft_strtrim.c	Trim leading and trailing a set of characters from a string.	ft_split.c	Split a string into an array of substrings.
ft_strjoin.c	Using malloc returns a new string as a result of the concatenation of 2 strings.	ft_itoa.c	Convert an integer to a string.
ft_striteri.c	Apply a function to each character of a string with an index.	ft_strmapi.c	Returns a string applying a function to each character of a string.
Output Functions
ft_putchar_fd.c	Output a character to a file descriptor.	ft_putstr_fd.c	Output a string to a file descriptor.
ft_putendl_fd.c	Output a string followed by a newline to a file descriptor.	ft_putnbr_fd.c	Output an integer to a file descriptor.

Bonus Functions
ft_lstnew_bonus.c	Create a new list element.	ft_lstadd_front_bonus.c	Add a new element to the beginning of a list.
ft_lstsize_bonus.c	Get the number of elements in a list.	ft_lstlast_bonus.c	Get the last element of a list.
ft_lstadd_back_bonus.c	Add a new element to the end of a list.	ft_lstdelone_bonus.c	Delete a node from a list without deleting its content.
ft_lstclear_bonus.c	Delete and free the memory of a list node and its consecutives.	ft_lstiter_bonus.c	Apply a function to each element of a list.
ft_lstmap_bonus.c	Creates a list by iterating and applying a function of a existing list.

Usage

Supported Platforms

• Linux
• macOS

Prerequisites

Before using Libft, you need:

• GCC: The GNU Compiler Collection.

Compilation

Make use of the make command to build and compile the library

Rules Available in the Makefile

Rule	Description
all	Compiles the library without the bonus files
bonus	Compiles the library with bonus files
clean	Removes every created object
fclean	Runs make clean and removes the libft.a
re	Runs make fclean and then make all
rebonus	Runs make fclean and then make bonus

Compilation Examples

• Compile without bonus:

cd libft
make all

• Delete objects and libft.a and compile with bonus:

make rebonus