How do I determine if a float is a whole number (ie has nothng after the decimal place)? I need to know if the result of my sqrt returns a whole number... Thanks Chris

A float is like a deciml. 10.43. It can be a whole number though.

Try this:

BOOL FloatIsWhole(float x){    return (x-(int)x)==0;}

I don''t think the last answer will always work the way you expect, as there can be precision errors with floats, in that you might do some integer arithmetic (such as sqrt(25)) and end up with 5.00000000000001 or whatever. So, instead of ==0, perhaps you could perhaps use <0.000001 && >-0.000001.

Anyway, what makes "return (x-(int)x)==0;" better than "return (x == (int)x)"?

How about

bool IsWholeSqrt( int startNum )
{
if( ( (int)sqrt( startNum )* (int)sqrt( startNum )) == startNum )
return true;
}


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