Hello I have a programme that loads a piece of text from a file. In this case it loads "drawrect(4,10,20,20);" from the txt file and stores it in a string. I then use substrings to change the string into just "4,10,20,20" which is good but I need to simplify it down even more to four strings each with one of those 4 numbers in it.

Currently I use:

void drawRectMethod(String s){
  String var1,var2,var3,var4;
  s = s.substring(s.indexOf('(') + 1);
  s = s.substring(0, s.lastIndexOf(')'));
  Serial.println(s);
}

to simplify the string down to "4,10,20,20" but this wont work to store each number in a separate string. How can I can I store each variable in a separate string. The numbers will be stored in var1 - var4.