I don't understand russian, therefore russian is unreadable.
I don't understand mathematics, therefore math is undreadable.
I don't understand music, therefore sheet is unreadable.
That is your problem in a nutshell.
Meanwhile, people here take a glance at the code and immediately get it, because it is written in a language they understand. These people tend to find it quite readable -- not necessarily an example of most pretty code, but nevertheless readable.
Still you do not address the simplest of points, which there are: meaningful variable names, meaningful procedure names, explaining comments. All of which are minimum standards for software development these days.
I may be a C noob, as I already and in an honest way stated in the very first post, but my points still stand. Those are not some subjective things. It is very clear, that those things add to readability, yet the code does not have them.
I addressed those points implicitly. Those names are meaningful, in context, to the people who understand the language; just as symbols in math are, in context, understandable to those who understand mathematics. And thus there is no need for comments. Arguably, there are too many comments, because I saw many that said something obvious without adding anything useful. Short identifiers aid reading for people who understand the language, because it allows them to focus on what the code does (or, rather, how exactly it does it) rather than what the things in it are (which is obvious to people who understand the language).
I don't understand mathematics, therefore math is undreadable.
I don't understand music, therefore sheet is unreadable.
That is your problem in a nutshell.
Meanwhile, people here take a glance at the code and immediately get it, because it is written in a language they understand. These people tend to find it quite readable -- not necessarily an example of most pretty code, but nevertheless readable.