libft

ABOUT

This is the very first project in 42's core curriculum. The goal is to learn more about standard C functions and explore how they work by implementing them from scratch. The finished project is a custom library that can be reused in later projects.

More details about this project and its implementation can be found in the attached subject file

MANDATORY

1. Characters functions:

Function	Description
ft_isalpha	Tests for an alphabetical character.
ft_isdigit	Tests whether a character is a decimal digit.
ft_isalnum	Tests for an alphanumeric character.
ft_isascii	Checks for a valid ASCII set character.
ft_isprint	Tests whether a character is printable.
ft_toupper	Converts a lower-case character to upper-case.
ft_tolower	Converts an upper-case character to lower-case.

2. String functions:

Function	Description
ft_strlen	Finds the length of a given string.
ft_strlcpy	Size-bounded string copying.
ft_strlcat	Size-bounded string concatenation.
ft_strchr	Finds the first occurrence of a character in a string.
ft_strrchr	Finds the last occurrence of a character in a string.
ft_strncmp	Compares the first 'n' characters of two strings.
ft_strnstr	Finds the first occurrence of a substring within first 'n' characters.
ft_substr	Extracts a substring from a given string.
ft_strjoin	Concatenates two strings into a new string (with malloc).
ft_strtrim	Trims the beginning and end of a string with a specified set of characters.
ft_split	Splits a string into an array of substrings based on a delimiter character.
ft_strmapi	Creates a new string by applying a function to each character of a string.
ft_striteri	Applies a function to each character of a string.

3. Memory functions:

Function	Description
ft_calloc	Allocates memory and initializes each block with a default value.
ft_memset	Sets the first 'n' bytes of memory to a given value.
ft_bzero	Sets the first 'n' bytes of memory to zero.
ft_memcpy	Copies 'n' bytes of memory (ignores memory overlaps)
ft_memmove	Copies 'n' bytes of memory (handles memory overlaps)
ft_memchr	Scans the first 'n' bytes of memory for the first occurrence of a given value.
ft_memcmp	Compares the first 'n' bytes of two areas in memory
ft_strdup	Creates a copy of a string (with malloc)

4. Numerical functions:

Function	Description
ft_atoi	Converts an ASCII string to an integer value.
ft_itoa	Converts an integer to a valid ASCII string.

5. File descriptor functions:

Function	Description
ft_putchar_fd	Outputs a character to the given file descriptor.
ft_putstr_fd	Outputs a string to the given file descriptor.
ft_putendl_fd	Outputs a string followed by a new line to the given file descriptor.
ft_putnbr_fd	Outputs an integer to the given file descriptor.

BONUS

Functions	Description
ft_lstnew	Creates a new linked-list (with malloc).
ft_lstadd_front	Adds a new node to the beginning of a list.
ft_lstadd_back	Adds a new node to the end of a list.
ft_lstsize	Calculates the number of nodes of a list.
ft_lstlast	Finds the last node of a list.
ft_lstdelone	Deletes a node from a list (with free)
ft_lstclear	Deletes all nodes from a list.
ft_lstiter	Apply a function to each node of a list.
ft_lstmap	Create a new list by applying a function to each node.