How many types of syntax are there in the beginning for writing C programming?

A whole bunch of them : C Tutorial[^]

That's not a "real" question - there aren't different types of syntax used in C - the language as a whole has a syntax: C Syntax Rules[^] but it isn't made up of separate syntaxes.

And while syntax is the whole of the language, but understanding that alone won't make you able to write "good code" - it just gives you the implementation of the good code in a specific language. The processes and algorithms, the mindset of writing code: they are independent of the specific language and it's syntax to a massive degree.

So think about what you expect to get as an answer and what you want to do with the information - then think about what the question you want answered actually is, because what you have asked here isn't it!

Your question is meaningless.

Variations in C syntax are usually minor and depend on the compiler being used.

As a whole the C language hasn't changed much over the decades, however, the libraries you may be using are too numerous to count and are dependent on what you want to do, the application type you're writing, the O/S you're writing for, and even the hardware you're targeting.

You're asking the wrong question.