Problem:
Simple Calculator

Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Input

The input consists of multiple datasets. Each dataset is given in the following format.

a op b

The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Constraints

0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108

Solution in Scala (judge verdict: Accepted)

object Main {
  case class Line(string: String) {
    def strings: Seq[String] = string.split(' ')
    def ints: Seq[Int] = strings.map(_.toInt)
    def doubles: Seq[Double] = strings.map(_.toDouble)
    def i(n: Int): Int = ints(n)
    def d(n: Int): Double = doubles(n)
  }

  def readLine: Line = Line(io.StdIn.readLine())
  def readLines(n: Int): Seq[Line] = List.fill(n)(Line(io.StdIn.readLine()))

  def yesNo(b: Boolean): String = if (b) "Yes" else "No"

  def main(args: Array[String]) {
    def read: Unit = {
      val ss: Seq[String] = readLine.strings
      val Seq(a, b) = List(ss(0).toInt, ss(2).toInt)
      val op: String = ss(1)

      if (op != "?") {
        val r: Int = op match {
          case "+" => a + b
          case "-" => a - b
          case "*" => a * b
          case "/" => a / b
        }
        println(r)
        read
      }
    }
    read
  }
}