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 PHP (judge verdict: Accepted)

<?php

$nums = array();
while (true) {
    
    list($a, $op, $b) = explode(" ", trim(fgets(STDIN)));
    
    if($op == "?"){
        break;
    }
    
    if ($op == "+") {
        array_push($nums, $a + $b);
    }else if($op == "-"){
        array_push($nums, $a - $b);
    }else if($op == "/"){
        array_push($nums, floor($a / $b));
    }else{
        array_push($nums, $a * $b);
    }
}
echo implode("\n", $nums), PHP_EOL;