Basic Calculator using "Clojure’s"

Question

We have to a write code in "Clojure’s" using case extension -

(defn calculator [x a b]
  (case x "+" (println (+ a b))
          "-" (println (- a b))
          "*" (println (* a b))
          "/" (println (/ a b)))
  
  )
)  
(def x (read-line))
(def a (Integer/parseInt (clojure.string/trim (read-line))))
(def b (Integer/parseInt (clojure.string/trim (read-line))))
(calculator x a b)

Please help us in above code i.e. where we went wrong.

Answer 1

I think you have one extra paren on calculator function.

(defn calculator [x a b]
  (case x "+" (println (+ a b))
          "-" (println (- a b))
          "*" (println (* a b))
          "/" (println (/ a b))))

(def x (read-line))
(def a (Integer/parseInt (clojure.string/trim (read-line))))
(def b (Integer/parseInt (clojure.string/trim (read-line))))

(calculator x a b)