Libft - École 42 Project

A custom C library reimplementing standard functions with additional utilities.

🌟 Overview

Libft is a foundational project for École 42 that involves reimplementing standard C library functions from scratch, along with additional helper functions for lists, memory, and string manipulation.

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📜 Functions

🧩 String Manipulation

Function	Description
ft_atoi	Converts string to integer
ft_strlen	Calculates string length
ft_strchr	Finds first occurrence of character
ft_strjoin	Concatenates two strings
ft_split	Splits string using delimiter
ft_substr	Extracts substring
ft_strtrim	Trims characters from start/end

🔢 Memory Operations

Function	Description
ft_bzero	Fills memory with zeros
ft_memcpy	Copies memory area
ft_calloc	Allocates and zero-initializes memory
ft_memmove	Moves memory block safely

📝 Type Checks & Conversions

Function	Description
ft_isalpha	Checks for alphabetic character
ft_isdigit	Checks for digit
ft_itoa	Converts integer to string
ft_toupper	Converts to uppercase

📌 Linked List Utilities

Function	Description
ft_lstnew	Creates new list element
ft_lstadd_back	Adds element to list end
ft_lstsize	Counts list elements

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⚙️ Installation

1. Clone the repository:

   git clone https://github.com/hasnasln/my_libft.git
   cd libft
   

2. Compile the library:

   make
   

3. Link libft.a in your projects.

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🚀 Usage Example

#include "libft.h"

int main() {
    char *s = ft_strjoin("Hello ", "42!");
    ft_putendl_fd(s, 1);
    free(s);
    return 0;
}