diff --git a/C_08/git/ex02/ft_abs.h b/C_08/git/ex02/ft_abs.h
new file mode 100644
index 0000000..e7adcfe
--- /dev/null
+++ b/C_08/git/ex02/ft_abs.h
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_boolean.h                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: gbaconni <gbaconni@42lausanne.ch>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/08/20 10:17:09 by gbaconni          #+#    #+#             */
+/*   Updated: 2021/08/20 12:05:50 by gbaconni         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef FT_ABS_H
+# define FT_ABS_H
+
+# define ABS(Value)	((Value < 0)? (-Value): (Value))
+
+#endif
diff --git a/C_08/git/ex02/main.c b/C_08/git/ex02/main.c
new file mode 100644
index 0000000..c609c73
--- /dev/null
+++ b/C_08/git/ex02/main.c
@@ -0,0 +1,50 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   main.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: gbaconni <gbaconni@42lausanne.ch>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/08/20 10:26:50 by gbaconni          #+#    #+#             */
+/*   Updated: 2021/08/20 10:34:14 by gbaconni         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_abs.h"
+#include <stdio.h>
+
+static int	ft_atoi(char *str)
+{
+	int	nb;
+	int	s;
+	int	i;
+
+	nb = 0;
+	s = 1;
+	i = 0;
+	while (str[i] != '\0' && (str[i] == ' ' || (str[i] >= '\t' && str[i] <= '\r')))
+		i++;
+	while (str[i] != '\0')
+	{
+		if (str[i] == '+')
+			s += 0;
+		else if (str[i] == '-')
+			s *= -1;
+		else if (str[i] >= '0' && str[i] <= '9')
+			nb = nb * 10 + str[i] - '0';
+		else
+			break ;
+		i++;
+	}
+	return (nb * s);
+}
+
+int	main(int argc, char *argv[])
+{
+	int	n;
+
+	(void) argc;
+	n = ft_atoi(argv[1]);
+	printf("%d\n", ABS(n));
+	return (0);
+}
diff --git a/C_08/git/ex02/main.sh b/C_08/git/ex02/main.sh
new file mode 100755
index 0000000..109663b
--- /dev/null
+++ b/C_08/git/ex02/main.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+norminette -R CheckDefine *.h
+norminette -R CheckForbiddenSourceHeader ft_*.c
+cpp main.c
+gcc -Wall -Wextra -Werror -o a.out *.c
+echo $(basename $PWD):
+./a.out "$@"
+rm -f a.out