needs math'
: <fizzbuzz>
[ 15 ^math'divisor? ] [ drop "FizzBuzz" puts ] when
[ 3 ^math'divisor? ] [ drop "Fizz" puts ] when
[ 5 ^math'divisor? ] [ drop "Buzz" puts ] when putn ;
: fizzbuzz cr 100 [ 1+ <fizzbuzz> space ] iter ;