So many if, else, case, while, whatever nested control flow, all in one procedure, that one can almost be sure, that one of those branches of execution will hav

So many if, else, case, while, whatever nested control flow, all in one procedure, that one can almost be sure, that one of those branches of execution will have a bug somewhere. Very short variable names, sometimes 1 character or 2 and pointer magic. Looks like a prime example of badly readable code.