PHP quiz. What will be the result of following code? <pre><c

What will be the result of following code?

$operation = "+";
$a = 66;
$b = 13;

switch ($operation) {
    default : $c = 0;
    case "+": $c = $a + $b;
    case "-": $c = $a - $b;
}
echo $c;

Explanation

Get an explanation when it's available:

why?

2018 Jul 10, 5:15:44 AM

or Read more about PHP Quizzes