Featured image WordPress

Just add the following code in your template file. Where you want to show the featured image.

<?php //Featured Image Code
if(has_post_thumbnail())
    {
$thumbnail=wp_get_attachment_image_src(get_post_thumbnail_id($post->ID),"full");
    ?>
<img src="<?php echo $thumbnail[0];?>" alt="<?php the_title();?>"/>
<?php }
    ?>