Simple calculation ??

Question

I don't understand why the answer to this is 10.
int a = 10, b;
b = a % (a + (a+1)/a);
cout << b
Parentheses first: 10 % (10 +11/10)
Then?? What am I missing?
Thanks

Answer 1

11/10 is 1, + 10 is 11
10 % 11 is 10.
What output are you expecting?

Answer 2

Oh, of course.
I just need more coffee.
Thanks!