Permalink and Title using echo

First, I'm sorry for my bad english.

Ok, I'm using this code in single.php on my worpdress, it will make post horizontally

<?php
// Show a selected number of posts per row
$posts_per_row = 5;
$posts_per_page = 20;
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args = array(
   'posts_per_page' => $posts_per_page,
   'paged' => $paged,
);
query_posts($args);
if (have_posts()) {
   while (have_posts()) {
      the_post();
      if ((++$post_counter % $posts_per_row) == 1  || $posts_per_row == 1) {
         if ($post_counter > 1) {
            echo "</div><!-- End of post_row -->\n";  // End previous row
         }
         echo "<div class='post_row'>\n";  // Start a new row
      }
      echo "<div class='post_class'>\n";  // Start one post
      // Output post data here
      echo '<h2>';the_title();echo '</h2>';
      the_excerpt();
      echo "</div><!-- End of post_class -->\n";  // End of post
   } ?>
   </div><!-- End of post_row -->
   <div class='clear'></div>
   <div class="navigation">
        <div class="alignleft"><?php next_posts_link('« Older Entries') ?></div>
        <div class="alignright"><?php previous_posts_link('Newer Entries »') ?></div>
   </div>
<?php } else {
   // Code for no posts found
}
?>

But, the result is just Title and post summary, how I can make post title with permalink as the link, like this code

<h2><a href="<?php the_permalink() ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h2>

I think, I should edit

echo '<h2>';the_title();echo '</h2>';

So, can anyone tell me the correct code ?