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: WA: Presentation Error)

process.stdin.setEncoding('utf-8');
process.stdin.on('data', (input) => {
  var arry = input.split('\n');
  var result = ''
  for (var i = 0; i < arry.length; i++) {
    var arr = arry[i].split(' ')
    var x = Number(arr[0]-0);
    var y = Number(arr[2]-0);

    var op = arr[1]


    if (op == '+') {
      result+= x + y;
    } else if (op == '-') {
      result+= x - y;
    } else if (op == '*') {
      result+= x * y;
    } else if (op == '/') {
      result+= Math.floor(x / y);
    }
    result+='\n'
  }
  console.log(result);
})