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)

'use strict';
process.stdin.on('data', function(chunk) {
    var inputs = chunk.toString().trim();
    var expressions = inputs.split('\n');
 
    for (var i = 0; i < expressions.length; i++) {
        if (expressions[i] === '0 ? 0') {
            break;
        }
        var expression = expressions[i].split(' ');
        var left = parseFloat(expression[0]);
        var right = parseFloat(expression[2]);
        var op = expression[1];
 
        switch (op) {
            case '+':
                console.log(left + right);
                break;
            case '-':
                console.log(left - right);
                break;
            case '*':
                console.log(left * right);
                break;
            case '/':
                console.log(Math.floor(left / right));
                break;
        }
 
    }
 
});
process.stdin.resume();
process.stdin.setEncoding('utf8');