diff --git a/ft_putnbrbase_fd.c b/ft_putnbrbase_fd.c
new file mode 100644
index 0000000..3014595
--- /dev/null
+++ b/ft_putnbrbase_fd.c
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbrbase_fd.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/18 10:57:44 by adjoly            #+#    #+#             */
+/*   Updated: 2023/11/18 11:07:59 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbrbase_fd(int n, char *base, int fd)
+{
+	unsigned int	nbr;
+	size_t			base_len;
+
+	base_len = ft_strlen(base);
+	if (n < 0)
+	{
+		write(fd, "-", 1);
+		nbr = -n;
+	}
+	else
+		nbr = n;
+	if (nbr < base_len)
+		write(fd, &base[nbr % base_len], 1);
+	else
+	{
+		ft_putnbrbase_fd(nbr / base_len, base, fd);
+		write(fd, &base[nbr % base_len], 1);
+	}
+}
+
+int	main(int ac, char **av)
+{
+	(void)ac;
+	ft_putnbrbase_fd(ft_atoi(av[1]), "0123456789abcdef", 1);
+}
diff --git a/libft.h b/libft.h
index a0eb4aa..05532d7 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/01 10:06:03 by adjoly            #+#    #+#             */
-/*   Updated: 2023/11/18 10:51:18 by adjoly           ###   ########.fr       */
+/*   Updated: 2023/11/18 11:02:29 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,7 +33,6 @@ void	ft_bzero(void *s, size_t n);
 void	*ft_memset(void *s, int c, size_t n);
 void	*ft_memmove(void *dest, const void *src, size_t n);
 void	*ft_memcpy(void *dest, const void *src, size_t n);
-void	ft_putchar(char c);
 void	ft_putchar_fd(char c, int fd);
 void	ft_putnbr_fd(int n, int fd);
 char	*ft_strdup(const char *s);
@@ -71,4 +70,7 @@ void	ft_lstclear(t_list **lst, void (*del)(void *));
 void	ft_lstiter(t_list *lst, void (*f)(void *));
 t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));
 
+void	ft_putchar(char c);
+void	ft_putnbrbase_fd(int n, char *base, int fd);
+
 #endif
\ No newline at end of file
diff --git a/libft.h.gch b/libft.h.gch
new file mode 100644
index 0000000..5f74ba7
Binary files /dev/null and b/libft.h.gch differ