// from https://en.wikipedia.org/wiki/C%2B%2B11#Range-based_for_loop

int main()
{
    int my_array[5] = {1, 2, 3, 4, 5};

    //double the value of each element in my_array:
    for (int& x : my_array) {
        x *= 2;
    }

    // similar but also using type inference for array elements
    for (auto& x : my_array) {
        x *= 2;
    }

    return my_array[2];
}