How does the compiler interpret this expression?

While readin开发者_如何学JAVAg through a C++ book, I came across an expression which was not explained properly (or maybe I just didn't understand the explanation). This is the expression:

c = a+++b;

Which of these does it mean?

c = a + (++b);  // 1

c = (a++) + b;  // 2

Thanks.

Its interpreted as:

c = a++ + b; //which is same as you're ve written : (a++) + b

Its following the Maximal munch rule.