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)

var input= require('fs').readFileSync('/dev/stdin', 'utf8');
var Arr=input.split("\n");
var str="";
for(var i=0;i<Arr.length;i++){
var arr=Arr[i].split(" ");
var a=arr[0]-0;
var b=arr[1];
var c=arr[2]-0;
if(b==="?")break;
if(b==="+")str+=a+c;
if(b==="-")str+=a-c;
if(b==="*")str+=a*c;
if(b==="/")str+=Math.floor(a/c);
str+="\n";
}
console.log(str.trim());