public class FizzBuzz
{
    public string GetOutput(int number) =>
      number % 3 == 0 && number % 5 == 0 ? "FizzBuzz" : number % 3 == 0 ? "Fizz" : number % 5 == 0 ? "Buzz" : number.ToString();
    
}

public class FizzBuzz
{
    public string GetOutput(int number) {
      if (number % 15 == 0) return "FizzBuzz";
      else if (number % 3 == 0) return "Fizz";
      else if (number % 5 == 0) return "Buzz";
      else return number.ToString();
      // Fizz buzz is a popular computer science interview question.  
      // The function above is given a number - if the number is
      // divisible by 3, return "fizz", if it's divisible by 5, 
      // return "buzz", if not divisble by 3 or 5 - return the
      // number itself.
    }
}