step by step explanation of grace

3_Sully/Makefile

@@ -1,6 +1,6 @@
 NAME         = Sully
 SRCS         = Sully.c
 CLONE        = $(NAME)_kid.c
-CREATE_CLONE = ./$(NAME) > $(CLONE)
+CREATE_CLONE = ./$(NAME)
 
 include ../MakefileCommon

3_Sully/Sully.c

@@ -12,4 +12,3 @@
 #define FFT(...) FT(__VA_ARGS__)
 
 FFT(PRINT)
-

3_Sully/calculate_print.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# it's important to put the input_string inside single quotes
+input_string='#include <stdio.h>%[\r]#define PRINT %[\s]%[\r]#define FT(...) int main(){%[\\]%[\r]'
+
+special_cahracters=$(echo -E "$input_string" | grep -o "%\[..\]")
+echo $special_cahracters
+
+# assiocative array : https://www.gnu.org/software/bash/manual/html_node/Arrays.html
+declare -A instructions
+instructions["%[\r]"]=10
+instructions["%[\s]"]="S"
+instructions["%[\\]"]=92
+instructions["%[\"]"]=34
+
+for key