42 school's first project, libft, is about learning how the standard functions of C programming work, by coding them from scratch and creating our very own library.
The file structure for this project is the following:
Where all of the functions are written in.
The header file is useful for 2 things:
- First, instead of doing for example
#include <unistd.h>in all of .c files, we just write it once in the header and all of .c files will read it from your header file. - Secondly, let's say one of the .c files uses another function from another .c file, well instead of writting that function above, just write
#include "libft.h"and it will find it in the header file.
Makefile is where we create a file to compile the projects, you just type make once the Makefile is created.
ft_isalpha- checks for an alphabetic character.ft_isdigit- checks for a digit (0 through 9).ft_isalnum- checks for an alphanumeric character.ft_isascii- checks whether c fits into the ASCII character set.ft_isprint- checks for any printable character.ft_toupper- convert char to uppercase.ft_tolower- convert char to lowercase.
ft_memset- fill memory with a constant byte.ft_strlen- calculate the length of a string.ft_bzero- zero a byte string.ft_memcpy- copy memory area.ft_memmove- copy memory area.ft_strlcpy- copy string to an specific size.ft_strlcat- concatenate string to an specific size.ft_strchr- locate character in string.ft_strrchr- locate character in string.ft_strncmp- compare two strings.ft_memchr- scan memory for a character.ft_memcmp- compare memory areas.ft_strnstr- locate a substring in a string.ft_strdup- creates a dupplicate for the string passed as parameter.
ft_atoi- convert a string to an integer.ft_calloc- allocates memory and sets its bytes' values to 0.
ft_substr- returns a substring from a string.ft_strjoin- concatenates two strings.ft_strtrim- trims the beginning and end of string with specific set of chars.ft_split- splits a string using a char as parameter.ft_itoa- converts a number into a string.ft_strmapi- applies a function to each character of a string.ft_striteri- applies a function to each character of a string.ft_putchar_fd- output a char to a file descriptor.ft_putstr_fd- output a string to a file descriptor.ft_putendl_fd- output a string to a file descriptor, followed by a new line.ft_putnbr_fd- output a number to a file descriptor.
ft_lstnew- creates a new list element.ft_lstadd_front- adds an element at the beginning of a list.ft_lstsize- counts the number of elements in a list.ft_lstlast- returns the last element of the list.ft_lstadd_back- adds an element at the end of a list.ft_lstclear- deletes and free list.ft_lstiter- applies a function to each element of a list.ft_lstmap- applies a function to each element of a list.
