“C - C++” joke about postfix/prefix operation ordering

Question

My friend sent me a joke:

Q. What\'s the difference between C and C++?

A. Nothing, because: (C - C++ == 0)

I tried to change

Answer 1

The difference is in the operators you use ++c and c++

c++ will increment the value BEFORE it is used in the calculation ++c will increment the value AFTER it is used in the calculation

also cdhowie's answer explains it better