diff --git a/.gitignore b/.gitignore
index 8213cd9..87fc3b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,22 +4,18 @@ build/
 *.d
 *.dSYM/
 
-/Colleen/Colleen
-/Grace/Grace
-/Sully/Sully
+*/Colleen/Colleen
+*/Grace/Grace
+*/Sully/Sully
 
-Colleen_kid.c
-Grace_kid.c
-Sully_*.c
+Colleen_kid.*
+Grace_kid.c*
+Sully_*.c*
 Sully_*
 
 *.swp
 *~
 .DS_Store
-.idea/
-.vscode/
 
-# Clang tools
 .clangd
 .clang-format
-compile_commands.json
diff --git a/C/Colleen/Colleen.c b/C/Colleen/Colleen.c
index dee8f76..abdec90 100644
--- a/C/Colleen/Colleen.c
+++ b/C/Colleen/Colleen.c
@@ -10,5 +10,5 @@ const char *get_program(void) {
 }
 
 int main(void) {
-	printf(get_program(), '\n', '\t', '"', get_program());
+	printf(get_program(), 10, 9, 34, get_program());
 }
diff --git a/C/Grace/Grace.c b/C/Grace/Grace.c
new file mode 100644
index 0000000..c78ae51
--- /dev/null
+++ b/C/Grace/Grace.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define TO_WRITE "#include <stdio.h>%1$c#include <stdlib.h>%1$c%1$c#define TO_WRITE %3$c%4$s%3$c%1$c#define NULL_CHECK(ptr){if (ptr == NULL) exit(1);}%1$c#define PROG()int main(void) {%2$cFILE *new_file = fopen(%3$cGrace_kid.c%3$c, %3$cw%3$c);%2$cNULL_CHECK(new_file);%2$cfprintf(new_file, TO_WRITE, 10, 9, 34, TO_WRITE);%2$cfclose(new_file);%2$creturn 0;}%1$c%1$c/**%1$c * @brief Actually the only is to hide this main on a define%1$c *%1$c * @return 0 on success overwise return 1%1$c */%1$c%1$cPROG()%1$c"
+#define NULL_CHECK(ptr){if (ptr == NULL) exit(1);}
+#define PROG()int main(void) {	FILE *new_file = fopen("Grace_kid.c", "w");	NULL_CHECK(new_file);	fprintf(new_file, TO_WRITE, 10, 9, 34, TO_WRITE);	fclose(new_file);	return 0;}
+
+/**
+ * @brief Actually the only is to hide this main on a define
+ *
+ * @return 0 on success overwise return 1
+ */
+
+PROG()
diff --git a/C/Makefile b/C/Makefile
index 353f26f..37425be 100644
--- a/C/Makefile
+++ b/C/Makefile
@@ -6,7 +6,7 @@
 #    By: rparodi <rparodi@student.42.fr>            +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2023/11/12 11:05:05 by rparodi           #+#    #+#              #
-#    Updated: 2026/01/30 16:34:30 by rparodi          ###   ########.fr        #
+#    Updated: 2026/01/30 23:25:20 by rparodi          ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -54,6 +54,8 @@ all: header $(NAME) footer
 
 # Exercices
 ex0: $(COLLEEN)
+ex1: $(GRACE)
+ex2: $(SULLY)
 
 # Dependences for all
 $(NAME): $(COLLEEN) $(GRACE) $(SULLY)
@@ -91,6 +93,31 @@ $(OBJDIRNAME)/%.o: %.c
 	@printf '$(GREY) Compiling $(END)$(GREEN)$<$(END)\n'
 	@$(CC) $(CFLAGS) -c -o $@ $<
 
+test: test_colleen test_grace test_sully
+
+test_colleen: $(COLLEEN)
+	@clear
+	@rm -rf /tmp/test_colleen.c
+	@$(COLLEEN) > /tmp/test_colleen.c
+	@printf '$(GREY)Output of the $(GOLD)Colleen$(END)\n'
+	@bat -plc /tmp/test_colleen.c
+	@printf "\n$(GREY)Here's the diff between $(GOLD)$(SRC_COLLEEN) $(GREY)and $(GOLD)/tmp/test_colleen.c$(END)\n"
+	@diff $(SRC_COLLEEN) /tmp/test_colleen.c | bat -ldiff
+
+test_grace: $(GRACE)
+	@$(GRACE)
+	@printf '\n\n\n$(GREY)Output of the $(GOLD)Grace$(END)\n'
+	@bat -plc ./Grace_kid.c
+	@printf "\n$(GREY)Here's the diff between $(GOLD)$(SRC_GRACE) $(GREY)and $(GOLD)Grace_kid.c $(END)\n"
+	@diff $(SRC_GRACE) ./Grace_kid.c | bat -ldiff
+
+test_sully: $(SULLY)
+	@$(SULLY) > /tmp/test_sully.c
+	@printf '$(GREY)Output of the $(GOLD)Sully$(END)\n'
+	@bat -plc /tmp/test_sully.c
+	@printf "\n$(GREY)Here's the diff between $(GOLD)$(SRC_SULLY) $(GREY)and $(GOLD)/tmp/test_sully.c$(END)\n"
+	@diff $(SRC_SULLY) /tmp/test_sully | bat -ldiff
+
 # Header
 header:
 	@printf '\n\n'
@@ -104,7 +131,7 @@ header:
 	@printf '$(GOLD)              ******    ******* ****** $(END)\n'
 	@printf '$(GOLD)              ******  $(END)\n'
 	@printf '$(GOLD)              ******  $(END)\n'
-	@printf '$(GREY)                                      Made by glaruell & rparodi$(END)\n\n'
+	@printf '$(GREY)                                      Made by rparodi$(END)\n\n'
 
 # Footer
 footer: