#define APPEND_TO_STRING(list,sep,add) ((list) = (((list) != "") ? strcat(list, sep, add) : (add)))
// Returns the correct difference between two always increasing numbers
#define APPEND_TO_STRING(list,sep,add) ((list) = (((list) != "") ? strcat(list, sep, add) : (add)))
// Returns the correct difference between two always increasing numbers