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 JavaScript (judge verdict: Accepted)

function main(input) {
  var temp = input.split('\n');
  for (var i=0; i<temp.length; i++) {
    var data = temp[i].split(' ');
    var a = parseInt(data[0]);
    var op = data[1];
    var b = parseInt(data[2]);
    if (op == "+")
      console.log(a+b);
    else if (op == '-')
      console.log(a-b);
    else if (op == '*')
      console.log(a*b);
    else if (op == '/')
      console.log(Math.floor(a/b));
    else 
      break;
  }
}

var x = require('fs').readFileSync('/dev/stdin', 'utf-8');
main(x);