diff --git a/ex00/ft_print_program_name.c b/ex00/ft_print_program_name.c
index e95e17f..2b2e838 100644
--- a/ex00/ft_print_program_name.c
+++ b/ex00/ft_print_program_name.c
@@ -12,19 +12,20 @@
 
 #include <unistd.h>
 
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
+
 void	ft_putstr(char *str)
 {
 	while (*str)
-		write(1, str++, 1);
+		ft_putchar(*str++);
+	ft_putchar('\n');
 }
 
-/* ////
 int	main(int argc, char **argv)
 {
-	(void) argc;
-	(void) argv;
-	ft_putstr(argv[0]);
-	ft_putstr("\n");
+	ft_puts(argv[0]);
 	return (0);
 }
-*/ ////
diff --git a/ex01/ft_print_params.c b/ex01/ft_print_params.c
index 7aa3ef4..28ffcbb 100644
--- a/ex01/ft_print_params.c
+++ b/ex01/ft_print_params.c
@@ -12,21 +12,24 @@
 
 #include <unistd.h>
 
-void	ft_printstr(char *str)
+void	ft_putchar(char c)
 {
-	while (*str)
-		write(1, str++, 1);
-	write(1, "\n", 1);
+	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_printstr(argv[i]);
+		ft_puts(argv[i]);
 	return (0);
 }
-*/ ////
diff --git a/ex02/ft_rev_params.c b/ex02/ft_rev_params.c
index 5e3cc0f..559a2a5 100644
--- a/ex02/ft_rev_params.c
+++ b/ex02/ft_rev_params.c
@@ -12,18 +12,21 @@
 
 #include <unistd.h>
 
-void	ft_printstr(char *str)
+void	ft_putchar(char c)
 {
-	while (*str)
-		write(1, str++, 1);
-	write(1, "\n", 1);
+	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_printstr(argv[argc]);
+		ft_puts(argv[argc]);
 	return (0);
 }
-*/ ////
diff --git a/ex03/ft_sort_params.c b/ex03/ft_sort_params.c
index ec2efa9..cfbd0fd 100644
--- a/ex03/ft_sort_params.c
+++ b/ex03/ft_sort_params.c
@@ -12,11 +12,11 @@
 
 #include <unistd.h>
 
-void	ft_printstr(char *str)
+void	ft_puts(char *str)
 {
 	while (*str)
 		write(1, str++, 1);
-	write(1, "\n", 1);
+	write(1, '\n', 1);
 }
 
 int	ft_strcmp(char *s1, char *s2)
@@ -51,12 +51,10 @@ void	ft_sort_str_tab(int size, char **tab)
 				swap_reset(&idx, &tab[idx], &tab[idx + 1]);
 }
 
-/* ////
 int	main(int argc, char **argv)
 {
 	ft_sort_str_tab(--argc, ++argv);
 	while (argc--)
-		ft_printstr(argv[argc]);
+		ft_puts(argv[argc]);
 	return (0);
 }
-*/ ////