42 Cursus - libft

Info

My implementation of some useful C functions and some additional ones to use it in future projects of 42.

• Status: still updating (I use libft a lot so I keep improving it)
• Result: 125%
• Observations: (null)

How to install and use

• Clone libft into your project folder

git clone https://github.com/izenynn/libft.git

• Run make inside libft folder (make rules: all, clean, fclean, re)

make

• Include libft.h in the header of your C file

#include <libft.h>

• Or include only the part that you are going to use (list of functions below)

#include <libft/ft_char.h>
#include <libft/ft_str.h>
#include <libft/ft_mem.h>
#include <libft/ft_nbr.h>
#include <libft/ft_fd.h>
#include <libft/ft_lst.h>
#include <libft/ft_dlst.h>
#include <libft/ft_printf.h>

How to compile with libft

Compile directly your .c files

• Just make sure you add libft (libft.a) and you specify libft.h path (-I flag) when you compile

gcc (...)(.c files) -o (output file) ./libft/libft.a -I ./libft/inc

Compile objects (.o) (for Makefiles)

• If you want to compile firts your .c files into .o, you will need to specify the -c flag (no linking) when compiling to .o files, and indicate the libft.h path with the -I flag

gcc -c (.c file) -o (.o output file) -I ./libft/inc

• Now we will compile all the .o into a program, and do the linking part with -L and -l, just specify the libft.a path with the -L flag

gcc (...)(.o files) -o (output file) -I ./libft/inc -L ./libft -lft

• ✨ Magic ✨

List of functions

ft_char

• ft_islower
• ft_isupper
• ft_isspace
• ft_isalpha
• ft_isdigit
• ft_isalnum
• ft_isascii
• ft_isprint
• ft_tolower
• ft_toupper

ft_str

• ft_strlen
• ft_strcpy
• ft_strlcpy
• ft_strcat
• ft_strlcat
• ft_strchr
• ft_strrchr
• ft_strncmp
• ft_strnstr
• ft_strdup
• ft_substr
• ft_strjoin
• ft_strtrim
• ft_split
• ft_strmapi
• ft_striteri

ft_mem

• ft_memset
• ft_bzero
• ft_memcpy
• ft_memmove
• ft_memchr
• ft_memcmp
• ft_calloc

ft_nbr

• ft_atoi
• ft_itoa
• ft_intlen
• ft_intlen_base
• ft_uintlen
• ft_uintlen_base
• ft_ulonglen
• ft_ulonglen_base

ft_fd

• ft_putchar_fd
• ft_putstr_fd
• ft_putendl_fd
• ft_putnbr_fd
• ft_get_next_line

ft_lst

• ft_lstnew
• ft_lstadd_front
• ft_lstadd_back
• ft_lstsize
• ft_lstlast
• ft_lstdelone
• ft_lstclear
• ft_lstiter
• ft_lstmap

ft_dlst

• ft_dlstnew
• ft_dlstadd_front
• ft_dlstadd_back
• ft_dlstsize
• ft_dlstfirst
• ft_dlstlast
• ft_dlstdelone
• ft_dlstclear
• ft_dlstiter
• ft_dlstmap

ft_printf

• ft_printf

ft_printf flags

• %c print a single character.
• %s print a string of characters.
• %p the void * pointer argument is printed in hexadecimal.
• %d print a decimal (base 10) number.
• %i print an integer in base 10.
• %u print an unsigned decimal (base 10) number
• %x print a number in hexadecimal (base 16) with lowercase.
• %X print a number in hexadecimal (base 16) with uppercase.
• %% print a percent sign.
• - left-justify within the given field width; Right justification is the default.
• 0 left-pads the number with zeroes (0) instead of spaces when padding is specified.
• . the precision in not specified in the format string, but as an additional integer value argument preceding the argument that has to be formated.
• # used with x or X specifiers the value is preceeded with 0x or 0X respectively for the values different than zero.
• (space) if no sign is going to be written, a blank space is inserted before the value.
• + forces to preceed the result with a plus or minus sign (+ or -) even for positive numbers. By default, only negative numbers are preceded with a - sign.