diff --git a/ex07/ft_putnbr.c b/ex07/ft_putnbr.c
new file mode 100644
index 0000000..ed18db4
--- /dev/null
+++ b/ex07/ft_putnbr.c
@@ -0,0 +1,50 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_print_reverse_alphabet.c                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tischmid <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/03/15 21:50:37 by tischmid          #+#    #+#             */
+/*   Updated: 2023/03/16 05:00:01 by tischmid         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+void	ft_putnbr(int nb)
+{
+	char	last_digit;
+
+	if (nb < 0)
+	{
+		write(1, "-", 1);
+		if (nb == 1 << 31)
+		{
+			nb += 2e9;
+			write(1, "2", 1);
+		}
+		nb *= -1;
+	}
+	last_digit = nb % 10 + 0x30;
+	if (nb > 9)
+	{
+		nb /= 10;
+		ft_putnbr(nb);
+	}
+	write(1, &last_digit, 1);
+}
+
+/* ////
+int	main(void)
+{
+	ft_putnbr(-2147483648);
+	// ft_putnbr(-10000);
+	// ft_putnbr(-1);
+	// ft_putnbr(0);
+	// ft_putnbr(1);
+	// ft_putnbr(10000);
+	// ft_putnbr(2147483647);
+	return (0);
+}
+*/ ////