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 extends App {
  val scanner = new java.util.Scanner(System.in)

  val data = Iterator.continually {
    val a  = scanner.nextInt
    val op = scanner.next.head
    val c  = scanner.nextInt

    (a, op, c)
  }

  val outputs = data.takeWhile(_._2 != '?').map {
    case (a, '+', c) => a + c
    case (a, '-', c) => a - c
    case (a, '*', c) => a * c
    case (a, '/', c) => a / c
    case (_,   _, _) => throw new ArithmeticException()
  }

  outputs.foreach(println)
}