Chapter 5 Problem 13 (c)

[Grimleik]

https://github.com/jaege/Cpp-Primer-5th-Exercises/blob/master/ch5/5.13.md

The solution is fine, but there is a logical mistake in the code we were provided.

The minor issue here is that the case 10 will never be hit if we modulus with 10.
If we want the switch to count all even numbers we should make a case label for 0 not 10.