Operand issues

Question

In one of my programs I have the following line:
thickness2=Math.abs((int)Math.round(thickness1/Math.sin((pi/2)*(1-(2*skip)/n))));
which was giving an unexpected (wrong) output. All the variable used are declared as Integers except for pi which is declared as a double-float.
I narrowed the error down to :
(1-(2*skip)/n)
which I realised the program was evaluating as an integer. I worked around the problem by declaring two doubles nf and skipf and replacing my line with:
nf=n;skipf=skip;
thickness2=Math.abs((int)Math.round(thickness1/Math.sin((pi/2)*(1-(2*skipf)/nf))));
This now gives accurate results but I was wondering if there was a better solution, ie some way to force the compiler to evaluate the (1-(2*skip)/n) part as a float/double even though the operands are integers.
Thanks.

Answer 1

That's perfect....thanks Flounder....exactly what I was looking for.
I guess the compiler will keep evaluating each section of the mathematical expression as an integer until it encounters at least one explicit float/double.