diff --git a/ex00/ft_print_program_name.c b/ex00/ft_print_program_name.c
new file mode 100644
index 0000000..8785f36
--- /dev/null
+++ b/ex00/ft_print_program_name.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_print_program_name.c                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tosuman </var/spool/mail/tosuman>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/03/30 18:07:58 by tosuman           #+#    #+#             */
+/*   Updated: 2023/04/01 02:24:34 by tischmid         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
+
+void	ft_puts(char *str)
+{
+	while (*str)
+		ft_putchar(*str++);
+	ft_putchar('\n');
+}
+
+int	main(int argc, char **argv)
+{
+	if (argc)
+		ft_puts(argv[0]);
+	return (0);
+}
diff --git a/ex01/ft_print_params.c b/ex01/ft_print_params.c
new file mode 100644
index 0000000..28ffcbb
--- /dev/null
+++ b/ex01/ft_print_params.c
@@ -0,0 +1,35 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_print_params.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tosuman </var/spool/mail/tosuman>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/03/30 18:09:30 by tosuman           #+#    #+#             */
+/*   Updated: 2023/03/30 18:09:31 by tosuman          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
+
+void	ft_puts(char *str)
+{
+	while (*str)
+		ft_putchar(*str++);
+	ft_putchar('\n');
+}
+
+int	main(int argc, char **argv)
+{
+	int	i;
+
+	i = 0;
+	while (++i < argc)
+		ft_puts(argv[i]);
+	return (0);
+}
diff --git a/ex02/ft_rev_params.c b/ex02/ft_rev_params.c
new file mode 100644
index 0000000..559a2a5
--- /dev/null
+++ b/ex02/ft_rev_params.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_rev_params.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tosuman </var/spool/mail/tosuman>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/03/30 18:12:39 by tosuman           #+#    #+#             */
+/*   Updated: 2023/03/30 18:12:40 by tosuman          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
+
+void	ft_puts(char *str)
+{
+	while (*str)
+		ft_putchar(*str++);
+	ft_putchar('\n');
+}
+
+int	main(int argc, char **argv)
+{
+	while (--argc)
+		ft_puts(argv[argc]);
+	return (0);
+}
diff --git a/ex03/ft_sort_params.c b/ex03/ft_sort_params.c
new file mode 100644
index 0000000..78969f7
--- /dev/null
+++ b/ex03/ft_sort_params.c
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_sort_params.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tosuman </var/spool/mail/tosuman>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/03/30 18:58:16 by tosuman           #+#    #+#             */
+/*   Updated: 2023/03/31 23:05:06 by tischmid         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+
+void	ft_puts(char *str)
+{
+	while (*str)
+		write(1, str++, 1);
+	write(1, "\n", 1);
+}
+
+int	ft_strcmp(char *s1, char *s2)
+{
+	while (*s1 && *s2 && *s1 == *s2)
+	{
+		++s1;
+		++s2;
+	}
+	return (*s1 - *s2);
+}
+
+void	swap_reset(int *counter, char **p1, char **p2)
+{
+	char	*tmp;
+
+	*counter = -1;
+	tmp = *p1;
+	*p1 = *p2;
+	*p2 = tmp;
+}
+
+void	ft_sort_str_tab(int size, char **tab)
+{
+	int	idx;
+
+	++size;
+	idx = -1;
+	while (--size)
+		while (++idx < size - 1)
+			if (ft_strcmp(tab[idx], tab[idx + 1]) < 0)
+				swap_reset(&idx, &tab[idx], &tab[idx + 1]);
+}
+
+int	main(int argc, char **argv)
+{
+	ft_sort_str_tab(--argc, ++argv);
+	while (argc--)
+		ft_puts(argv[argc]);
+	return (0);
+}