Given two integers <code>num1</code> and <code>num2</code>, return <em>the <strong>sum</strong> of the two integers</em>. <p> </p> <p><strong>Example 1:</strong></p> <pre> <strong>Input:</strong> num1 = 12, num2 = 5 <strong>Output:</strong> 17 <strong>Explanation:</strong> num1 is 12, num2 is 5, and their sum is 12 + 5 = 17, so 17 is returned. </pre> <p><strong>Example 2:</strong></p> <pre> <strong>Input:</strong> num1 = -10, num2 = 4 <strong>Output:</strong> -6 <strong>Explanation:</strong> num1 + num2 = -6, so -6 is returned. </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>-100 <= num1, num2 <= 100</code></li> </ul>