Misleading comment in example in chapter 4

[Árni Már Jónsson]

Hi, and thanks for an excellent book.

While reading chapter 4 I believe there's a misleading comment:

	for (int i = 0; auto x : {'A', 'B', 'C'})
		std::cout << i++ << ":" << x << " "; // print: 1:A 2:B 3:C

The incrementor starts at 0, not 1 as the comment indicates

[Federico]

Thanks for reporting it, @arnimarj.