% not usable on double options?

[domweng]

I now understand % is not usable on double values, is there anyway around this because if I set the variable to an integer type my whole code messes up.

  if(counter % 5 != 0)
    {
        cout << setw(15) << counter << setw(15) << fallDist << endl;
    }

[dutch]

Possibly https://en.cppreference.com/w/cpp/numeric/math/fmod
But it really sounds like a design problem.