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 io.Source.stdin

object Main {
  
  def main(args: Array[String]) {
    for (list <- stdin.getLines().takeWhile(!_.contains("?")).map(_.split(" "))) {
      val (a, op, b) = (list(0).toInt, list(1), list(2).toInt)
      val result = op match {
        case "+" => a + b
        case "-" => a - b
        case "*" => a * b
        case "/" => a / b
      }
      println(result)
    }
  }
}