Description

    This C file contains functions for string manipulation and file reading, including functions to get the length of a  
 string, find a character in a string, join two strings, get a line from a string, and create a new string from the 
 remaining characters after a newline.

Functions

1. ft_strlen
    Description: Calculates the length of a string.
    Parameters: char *s - Pointer to the string.
    Returns: size_t - Length of the string.

2. ft_strchr 
    Description: Finds the first occurrence of a character in a string.
    Parameters: char *s - Pointer to the string, int c - Character to find.
    Returns: char * - Pointer to the first occurrence of the character, or NULL if not found.

3. ft_strjoin 
    Description: Concatenates two strings.
    Parameters: char *left_str - Pointer to the left string, char *buff - Pointer to the right string.
    Returns: char * - Pointer to the concatenated string, or NULL if memory allocation fails.

4. ft_get_line
    Description: Extracts a line from a string until a newline character.
    Parameters: char *left_str - Pointer to the string.
    Returns: char * - Pointer to the extracted line, or NULL if not found.

5. ft_new_left_str 
    Description: Creates a new string with the remaining characters after a newline.
    Parameters: char *left_str - Pointer to the string.
    Returns: char * - Pointer to the new string, or NULL if the newline is not found or memory allocation fails.

Usage

Include the get_next_line.h header file.
Use the provided functions in your C program as needed.