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)

import scala.io.StdIn

/**
  * AOJ
  */
object Main {

  def main(args: Array[String]): Unit = {

    while(true){
      val in = StdIn.readLine().split(" ")
      if(in(1).toString == "?") return
      println(
        in(1).toString match {
          case "+" => in(0).toInt + in(2).toInt
          case "-" => in(0).toInt - in(2).toInt
          case "*" => in(0).toInt * in(2).toInt
          case "/" => in(0).toInt / in(2).toInt
        }
      )
    }
  }
}