Rounding vs. truncation?

[cozySam]

Hello!

#include <iostream>
using namespace std;

int main()
{
    int a = 9;
    int b = a/2;
    cout << b << endl;

    int c = 11;
    int d = c/6;
    cout << d << endl;

    return 0;
}

I see the result of such division referred to as "rounding down". This must be wrong, is it not? I think it should be pretty clear to anyone who had basic math education that you round up numbers that end on the digit 5 or above, and you round down numbers that end on the digit 4 or below.

Why is 9/2 said to be "rounded down" to 4? Isn't this called truncation? It's truncated to 4, is it not? And 11/6 is truncated to 1? You don't "round down" 1.8333... do you?