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)

"use strict";

function Main(input) {
    input=input.split("\n");
    for(var i=0;i<input.length;i++){
        if(input[i][2] == '?')
            break;
        console.log(eval(input[i])+"\n");
    }
}
    
function debug(){
	var input = document.getElementById("input").value;
	Main(input);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));