diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..89efb0f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build
+*.swp
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1b1698f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,22 @@
+#location of test mains
+OFFSHORE_MAINS := .
+# location of project directories
+OFFSHORE_PROJECTS := ..
+
+empty:=
+space:= $(empty) $(empty)
+CFLAGS_MANDATORY := -Wall -Wextra -Werror
+all: $(foreach e, 00 01 02 03 04 05 06 07 08, build/c00/ex$e)
+build: 
+	mkdir $@
+norme:
+	norminette -R CheckForbiddenSourceHeader ../c$(subst _,$(space),)
+clean:
+	rm -rf build
+
+.SECONDEXPANSION:
+build/c%: $(OFFSHORE_PROJECTS)/c$$(subst _,+,$$*)/*.c $$(OFFSHORE_MAINS)/c$$*.c
+	mkdir -p $(@D)
+	$(CC) -o $@ $(CFLAGS_MANDATORY) $(CFLAGS) $^ 
+
+.PHONY: all norme clean
diff --git a/c00_ex00.c b/c00/ex00.c
similarity index 100%
rename from c00_ex00.c
rename to c00/ex00.c
diff --git a/c00_ex01.c b/c00/ex01.c
similarity index 100%
rename from c00_ex01.c
rename to c00/ex01.c
diff --git a/c00_ex02.c b/c00/ex02.c
similarity index 100%
rename from c00_ex02.c
rename to c00/ex02.c
diff --git a/c00_ex03.c b/c00/ex03.c
similarity index 100%
rename from c00_ex03.c
rename to c00/ex03.c
diff --git a/c00_ex04.c b/c00/ex04.c
similarity index 100%
rename from c00_ex04.c
rename to c00/ex04.c
diff --git a/c00_ex05.c b/c00/ex05.c
similarity index 100%
rename from c00_ex05.c
rename to c00/ex05.c
diff --git a/c00_ex06.c b/c00/ex06.c
similarity index 100%
rename from c00_ex06.c
rename to c00/ex06.c
diff --git a/c00_ex07.c b/c00/ex07.c
similarity index 78%
rename from c00_ex07.c
rename to c00/ex07.c
index 2a68b0c..7930d38 100644
--- a/c00_ex07.c
+++ b/c00/ex07.c
@@ -1,8 +1,11 @@
 void	ft_putnbr(int);
 void	ft_putchar(char);
+#include <limits.h>
+#include <stdio.h>
 int main(void)
 {
-	ft_putnbr(0xEFFFFFFF);
+	printf("%d = \n", INT_MIN);
+	ft_putnbr(INT_MIN);
 	ft_putchar('\n');
 	ft_putnbr(-7141);
 	ft_putchar('\n');
@@ -20,6 +23,6 @@ int main(void)
 	ft_putchar('\n');
 	ft_putnbr(0xBADF00D);
 	ft_putchar('\n');
-	ft_putnbr(0x7FFFFFFF);
+	ft_putnbr(INT_MAX);
 	ft_putchar('\n');
 }
diff --git a/c00_ex08.c b/c00/ex08.c
similarity index 100%
rename from c00_ex08.c
rename to c00/ex08.c