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 {
  scala.io.Source.stdin.getLines.toList.map(_.split(" ")).takeWhile(_(1) != "?").map(x => (x(0).toInt, x(1), x(2).toInt)).map({
    case (a, "+", b) => a + b
    case (a, "-", b) => a - b
    case (a, "*", b) => a * b
    case (a, "/", b) => a / b
    case _ => -100100100
  }).map(println)
}