What are the potential pitfalls of relying solely on certification exams without practical programming experience?

Relying solely on certification exams without practical programming experience can lead to a lack of real-world problem-solving skills and the ability to apply theoretical knowledge in practical scenarios. To mitigate this issue, individuals should complement their exam preparation with hands-on programming projects and exercises to gain practical experience and enhance their problem-solving abilities.

<?php

// Implementing a hands-on programming project to gain practical experience
class Calculator {
    public function add($num1, $num2) {
        return $num1 + $num2;
    }

    public function subtract($num1, $num2) {
        return $num1 - $num2;
    }
}

$calculator = new Calculator();
echo $calculator->add(5, 3); // Output: 8
echo $calculator->subtract(5, 3); // Output: 2

?>