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 {
  def main (args: Array[String]) {
    for(line <- scala.io.Source.stdin.getLines()){
      val Array(v1,opr,v2) = line.split(" ");
      if (opr == "?")  return
      val val1:Int = v1.toInt
      val val2:Int = v2.toInt
 
      opr match{
        case "+"  =>  println(val1 + val2)
        case "-"  =>  println(val1 - val2)
        case "*"  =>  println(val1 * val2)
        case "/"  =>  println(val1 / val2)
        case _ => println("????");
      }
    }
  }
}