function for calculating how many ducks that can fit in a normal size bathtub

double area(double length, double width, double height)
{
    double area=length*width*height;
    return area;
}

int ducks(double area)
{
    int ducks=(int)(area/0.5);
    return ducks;
}

Console.WriteLine(ducks(area(189, 78, 55)));