step by step explanation of grace

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