(de hq9+ (Code) (let Accu 0 (for C (chop Code) (case C ("H" (prinl "Hello, world")) ("Q" (prinl Code)) ("9" (for (N 99 (gt0 N)) (prinl N " bottles of beer on the wall") (prinl N " bottles of beer") (prinl "Take one down, pass it around") (prinl (dec 'N) " bottles of beer on the wall") (prinl) ) ) ("+" (inc 'Accu)) ) ) Accu ) )