Here are two snippets for displaying the category name and displaying the category link in WordPress.
To display the name of the first category:
<? php $cat = get_the_category(); echo $cat[0]->cat_name; ?>
zero
displays the first category, so one
will display the second category, two
will display the third category, and so on.
To display a list of links to each category:
<? php the_category(', '); ?>
The comma ', '
serves as a separator when the post is included in more than one category.