get_category_link( int|object $category )

Source

File: wp-includes/category-template.php

function get_category_link( $category ) {
	if ( ! is_object( $category ) ) {
		$category = (int) $category;
	}

	$category = get_term_link( $category );

	if ( is_wp_error( $category ) ) {
		return '';
	}

	return $category;
}