The high-level scripting Mareal programming language.
go install github.com/mandriota/mareal
mareal file.mr
_
(def fib-helper (lambda (quote n x y)
(if n (fib-helper (- n 1) (+ x y) x) x)))
(def fib (lambda (quote n)
(fib-helper n 0 1)))
(put (_ "fibonacci: "
(fib (num
(get "enter number: ")))) nl)
You can find more examples in ./examples directory.