CODE NETWORK!

Calculator.scala

object Calculator extends App {

  def multiply(a:Int, b:Int) = a * b

  def minus(a:Int, b:Int) = a - b

  def add(a:Int, b:Int) = a + b

  def divide(a:Int, b:Int) = a / b

  def execute(f: (Int, Int) => Int, a: Int, b: Int):Int = { //Functions are objects in Scala
    f(a,b)
  }

  println(execute(add, 31, 11)) //Meaning of Life
}