A function to return a sign

Question

I know this will really turn out to be simple, but my brain is just not working. I need a function in C# that will return -1 if the integer passed to the function has a nega

Answer 1

public int SignFunction(int number) {
  return (number > 0) ? 
             1 : (number < 0) ? 
                    -1 : number;
}