Day 17: More Exceptions

https://www.hackerrank.com/challenges/30-more-exceptions/problem

<?php
//Enter your code here
class Calculator {
    public function power($n, $p){
        if($n < 0 || $p < 0){
            throw new Exception('n and p should be non-negative');
        } else {
            return pow($n, $p);
        }
    }
}

$myCalculator=new Calculator();
$T=intval(fgets(STDIN));
while($T-->0){
    list($n, $p)  = explode(" ", trim(fgets(STDIN)));
    try{
        $ans=$myCalculator->power($n,$p);
        echo $ans."\n";
    }
    catch(Exception $e){
        echo $e->getMessage()."\n";
    }
}
?>