Easy. It&#39;s because you assign n to itself before you increment it. The expected way would be simply<div><br></div><div>n++;</div><div><br></div><div>instead of</div><div><br></div><div>n = n++;</div><div><br></div><div>

To give you the output of</div><div><br></div><div>1</div><div>2</div><div>3</div><div>4</div><div>5</div>