1 // a simple factorial program

     2 // (including a tail recursive version)

     3 

     4 

     5 def fact(n) =

     6   if n == 0 then 1 else n * fact(n - 1);

     7 

     8 def facT(n, acc) =

     9   if n == 0 then acc else facT(n - 1, n * acc);

    10 

    11 def facTi(n) = facT(n, 1);

    12 

    13 //fact(10)

    14 //facTi(10)

    15 

    16 write(facTi(6))

    17