diff --git a/libftx/extra/Makefile b/libftx/extra/Makefile
index bc967dd..6ae9605 100644
--- a/libftx/extra/Makefile
+++ b/libftx/extra/Makefile
@@ -6,13 +6,13 @@
 #    By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2022/09/27 08:39:27 by cchauvet          #+#    #+#              #
-#    Updated: 2023/01/19 12:55:43 by cchauvet         ###   ########.fr        #
+#    Updated: 2023/04/26 12:14:25 by cchauvet         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
 CC = clang
 
-SRCS = ft_contain_only.c ft_freer.c ft_is_in.c ft_random_generator.c ft_strchri.c ft_strcmp.c ft_strfjoin.c ft_strgen.c ft_strmerger.c ft_strndup.c ft_tabrealloc.c ft_ultoa_base.c ft_swap.c
+SRCS = ft_contain_only.c ft_freer.c ft_is_in.c ft_random_generator.c ft_strchri.c ft_strcmp.c ft_strfjoin.c ft_strgen.c ft_strmerger.c ft_strndup.c ft_tabrealloc.c ft_ultoa_base.c ft_swap.c ft_tablen.c
 
 OBJS = $(SRCS:.c=.o)
 
diff --git a/libftx/extra/extra.h b/libftx/extra/extra.h
index f745d3f..ff7f0bd 100644
--- a/libftx/extra/extra.h
+++ b/libftx/extra/extra.h
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/01/04 14:03:10 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/01/19 17:35:09 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/04/26 12:24:00 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,6 +18,7 @@
 # include <fcntl.h>
 # include "../libft/libft.h"
 
+size_t		ft_tablen(const char **tab);
 char		*ft_ultoa_base(unsigned long long n, char *base);
 char		*get_next_line(int fd);
 size_t		ft_random_generator(size_t start, size_t stop);
@@ -32,7 +33,7 @@ char		*ft_strndup(const char *src, size_t n);
 ssize_t		ft_strchri(char *str, char c);
 int			ft_contain_only_str(char *str, char *to_find);
 int			ft_contain_only(char *str, char c);
-int			ft_strcmp(char *s1, char *s2);
+int			ft_strcmp(const char *s1, const char *s2);
 void		ft_swap(void *a, void *b);
 void		ft_swap_int(int *a, int *b);
 void		ft_swap_char(char *a, char *b);
diff --git a/libftx/extra/ft_strcmp.c b/libftx/extra/ft_strcmp.c
index 3b7265d..5f8d7b3 100644
--- a/libftx/extra/ft_strcmp.c
+++ b/libftx/extra/ft_strcmp.c
@@ -6,13 +6,13 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/01/04 19:20:47 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/01/05 13:20:20 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/04/26 12:23:52 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "extra.h"
 
-int	ft_strcmp(char *s1, char *s2)
+int	ft_strcmp(const char *s1, const char *s2)
 {
 	int	i;
 
diff --git a/libftx/extra/ft_tablen.c b/libftx/extra/ft_tablen.c
new file mode 100644
index 0000000..9104e1a
--- /dev/null
+++ b/libftx/extra/ft_tablen.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_tablen.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/04/26 12:12:19 by cchauvet          #+#    #+#             */
+/*   Updated: 2023/04/26 12:13:38 by cchauvet         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "./extra.h"
+
+size_t	ft_tablen(const char **tab)
+{
+	size_t	i;
+
+	i = 0;
+	while (tab[i] != NULL)
+		i++;
+	return (i);
+}
diff --git a/libftx/libftx.h b/libftx/libftx.h
index 1585365..9020636 100644
--- a/libftx/libftx.h
+++ b/libftx/libftx.h
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/09/26 14:47:54 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/21 13:28:19 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/04/26 12:22:51 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,6 +17,7 @@
 # include <stdarg.h>
 # include "./libft/libft.h"
 
+size_t	ft_tablen(const char **tab);
 char	*ft_ultoa_base(unsigned long long n, char *base);
 int		ft_printf(const char *format, ...);
 int		ft_eprintf(const char *format, ...);
@@ -33,7 +34,7 @@ int		ft_contain_only_str(char *str, char *to_find);
 int		ft_contain_only(char *str, char c);
 char	*ft_strfjoin(char *s1, char *s2);
 char	*ft_strmerger(size_t arg_len, ...);
-int		ft_strcmp(char *s1, char *s2);
+int		ft_strcmp(const char *s1, const char *s2);
 ssize_t	ft_strchri(char *str, char c);
 char	*ft_strndup(const char *src, size_t n);
 void	ft_swap(void *a, void *b);