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Libft

Summary

Is an individual project that requieres to create a C library for future projects, it has some re-implemented standard C functions, and other non-standar functions. We get a deeper understanding of data structures and basic algorithms. During the cursus we are only allowed to use functions that we have programed, so we have to keep growing this libary with anything we would find useful.

char*
ft_strjoin(const char *s1, const char *s2)
{
	size_t	total;
	char	*str;

	total = ft_strlen(s1) + ft_strlen(s2) + 1;
	str = ft_calloc(total, 1);
	if (!str)
		return (NULL);
	ft_strlcat(str, s1, total);
	ft_strlcat(str, s2, total);
	return (str);
}

Introduction

C programming can be very tedious when one doesn’t have access to the highly useful standard functions. This project is about understanding the way these functions work, implementing and learning to use them. Your will create your own library. It will be helpful since you will use it in your next C school assignments. Take the time to expand your libft throughout the year. However, when working on a new project, don’t forget to ensure the functions used in your library are allowed in the project guidelines

Mandatory part

Write your own library: a collection of functions that will be a useful tool for your cursus.

Technical considerations

• Declaring global variables is forbidden.
• If you need helper functions to split a more complex function, define them as static functions. This way, their scope will be limited to the appropriate file.
• Place all your files at the root of your repository.
• Turning in unused files is forbidden.
• Every .c files must compile with the flags -Wall -Wextra -Werror.
• You must use the command ar to create your library. Using the libtool command is forbidden.
• Your libft.a has to be created at the root of your repository.

Libc function

To begin, you must redo a set of functions from the libc. Your functions will have the same prototypes and implement the same behaviors as the originals. They must comply with the way they are defined in their man. The only difference will be their names. They will begin with the ’ft_’ prefix. For instance, strlen becomes ft_strlen.

Additional function

In this second part, you must develop a set of functions that are either not in the libc, or that are part of it but in a different form.

Bonus part

If you completed the mandatory part, do not hesitate to go further by doing this extra one. It will bring bonus points if passed successfully. Functions to manipulate memory and strings is very useful. But you will soon discover that manipulating lists is even more useful.

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Libc functions	Additional functions	Bonus Functions
memset	ft_memalloc	ft_lstnew
bzero	ft_memdel	ft_lstdelone
memcpy	ft_strnew	ft_lstdel
memccpy	ft_strdel	ft_lstadd
memmove	ft_strclr	ft_lstiter
memchr	ft_striter	ft_lstmap
memcmp	ft_striteri
strlen	ft_strmap
strdup	ft_strmapi
strcpy	ft_strequ
strncpy	ft_strnequ
strcat	ft_strsub
strlcat	ft_strjoin
strchr	ft_strtrim
strrchr	ft_strsplit
strstr	ft_itoa
strnstr	ft_putchar
strcmp	ft_putstr
strncmp	ft_putendl
atoi	ft_putnbr
isalpha	ft_putchar_fd
isdigit	ft_putstr_fd
isalnum	ft_putendl_fd
isascii	ft_putnbr_fd
isprint
toupper
tolower