diff --git a/Makefile b/Makefile
index cf9e408..0a757af 100644
--- a/Makefile
+++ b/Makefile
@@ -7,18 +7,19 @@ empty:=
 space:= $(empty) $(empty)
 CFLAGS_MANDATORY := -Wall -Wextra -Werror
 all_builds := $(foreach e, 00 01 02 03 04 05 06 07 08, build/c00/ex$e) \
-  $(foreach e, 00 01 02 03 04 05 06 07 08, build/c01/ex$e)
+  $(foreach e, 00 01 02 03 04 05 06 07 08, build/c01/ex$e) \
+  $(foreach e, 00 01 02 03 04 05 06 07 08 09 10 11 12, build/c02/ex$e) \
+
 all: norme $(all_builds)
 build: 
 	mkdir $@
 clean:
 	rm -rf build
+.PHONY: all norme clean
 
 .SECONDEXPANSION:
-build/c%: $(OFFSHORE_PROJECTS)/c$$(subst _,+,$$*)/*.c $$(OFFSHORE_MAINS)/c$$*.c
+build/c%: $(OFFSHORE_PROJECTS)/c$$*/*.c $$(OFFSHORE_MAINS)/c$$*.c
 	mkdir -p $(@D)
 	$(CC) -o $@ $(CFLAGS_MANDATORY) $(CFLAGS) $^ 
 norme: $$(wildcard $(OFFSHORE_PROJECTS)/c*)
 	norminette -R CheckForbiddenSourceHeader $^
-
-.PHONY: all norme clean
diff --git a/c00/ex00.c b/c00/ex00.c
index a7c637d..f30b674 100644
--- a/c00/ex00.c
+++ b/c00/ex00.c
@@ -6,13 +6,19 @@
 /*   By: achubuko <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/18 19:43:15 by achubuko          #+#    #+#             */
-/*   Updated: 2023/11/18 19:52:46 by achubuko         ###   ########.fr       */
+/*   Updated: 2023/11/23 01:00:45 by achubuko         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
-
+#include <stdio.h>
 void	ft_putchar(char c);
 
 int	main()
 {
-	ft_putchar('0');
+	printf("Hello\n");
+	ft_putchar('H');
+	ft_putchar('e');
+	ft_putchar('l');
+	ft_putchar('l');
+	ft_putchar('o');
+	ft_putchar('\n');
 }
diff --git a/c00/ex01.c b/c00/ex01.c
index 2bfe84b..82088cf 100644
--- a/c00/ex01.c
+++ b/c00/ex01.c
@@ -6,13 +6,16 @@
 /*   By: achubuko <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/18 20:31:16 by achubuko          #+#    #+#             */
-/*   Updated: 2023/11/18 20:46:04 by achubuko         ###   ########.fr       */
+/*   Updated: 2023/11/23 01:08:00 by achubuko         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
+#include <unistd.h>
 void ft_print_alphabet(void);
 
 int	main(void)
 {
+	write(1, "abcdefghijklmnopqrstuvwxyz%\n", 28);
 	ft_print_alphabet();
+	write(1,"%\n", 2);
 	return 0;
 }
diff --git a/c00/ex02.c b/c00/ex02.c
index 738b46c..58cad25 100644
--- a/c00/ex02.c
+++ b/c00/ex02.c
@@ -1,18 +1,10 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   c00_ex01.c                                         :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: achubuko <marvin@42.fr>                    +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2023/11/18 20:31:16 by achubuko          #+#    #+#             */
-/*   Updated: 2023/11/18 22:07:50 by achubuko         ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
+#include <unistd.h>
 void ft_print_reverse_alphabet(void);
 
 int	main(void)
 {
+	write(1, "zyxwvutsrqponmlkjihgfedcba%\n", 28);
 	ft_print_reverse_alphabet();
+	write(1, "%\n", 2);
 	return 0;
 }
diff --git a/c00/ex03.c b/c00/ex03.c
index f57e2ca..b704bcf 100644
--- a/c00/ex03.c
+++ b/c00/ex03.c
@@ -1,18 +1,10 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   c00_ex01.c                                         :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: achubuko <marvin@42.fr>                    +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2023/11/18 20:31:16 by achubuko          #+#    #+#             */
-/*   Updated: 2023/11/18 22:24:47 by achubuko         ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
+#include <unistd.h>
 void ft_print_numbers(void);
 
 int	main(void)
 {
+	write(1, "0123456789%\n", 12);
 	ft_print_numbers();
+	write(1, "%\n", 2);
 	return 0;
 }
diff --git a/c01/ex08.c b/c01/ex08.c
index 7215f08..058666c 100644
--- a/c01/ex08.c
+++ b/c01/ex08.c
@@ -15,7 +15,7 @@ void ft_sort_int_tab(int *tab, int size);
 int main(void)
 {
 	int l = 21;
-	int a[21] = {4864, 3701, 20180, 26376, 32663, 15756, 18510, 1899, 9799, 13343, 25186, 7746, 8528, 7746, 11579, 4635, 25883, 23006, 3988, 21611, 26591};
+	int a[21] = {4864, 3701, 20180, -26376, 32663, 15756, -18510, -1899, 9799, 13343, -25186, 7746, 8528, 7746, 11579, 4635, 25883, 23006, 3988, 21611, 26591};
 	printarr(a, l);
 	ft_sort_int_tab(a, l);
 	printarr(a, l);
diff --git a/c02/ex00.c b/c02/ex00.c
new file mode 100644
index 0000000..248dee6
--- /dev/null
+++ b/c02/ex00.c
@@ -0,0 +1,9 @@
+char *ft_strcpy(char *dest, char *src);
+int main(void)
+{
+	char s[100] = "hello";
+	char d[100] = "goodbye";
+
+	ft_strcpy(s, d);
+
+}