Why does a=(b++) have the same behavior as a=b++?

Question

I am writing a small test app in C with GCC 4.8.4 pre-installed on my Ubuntu 14.04. And I got confused for the fact that the expression a=(b++); behaves in the

Answer 1

To make it short: b++ is incremented after the statement is done

But even after that, the result of b++ is put to a.

Because of that parentheses do not change the value here.