How to Build a Calculator in Elixir

In ecilisp, you can create a calculator by defining functions. Here is a simple example:

(define (calculator)
  (display "Enter an expression (+, -, *, /): ")
  (let ((expression (read)))
    (let ((result (case expression
                    ((+) (+ (read) (read)))
                    ((-) (- (read) (read)))
                    ((*)
                     (* (read) (read)))
                    ((/)
                     (/ (read) (read)))))
      (display "Result: ")
      (display result))))

Next, you can call this function in the ecilisp REPL to use the calculator.

(calculator)

Next, enter the expression based on the prompt (e.g. +, -, *, /), then input two numbers, and the calculator will calculate and display the result.