Code to show Role name?

Do you wish to show role name of current user?

Yes i have change the name of roles whith this plugin and now i want add the rolename to the comments! In addition to the name

global $current_user, $wp_roles;

  echo 'Current user role name: '. $wp_roles->role_names[$current_user->roles[0]];

Nice but show all user as Administartor?

Replace $current_user to the comment’s author user object, which you may get by his user_id:

$user = get_user_by('id', $user_id);

So?

<?php global $user = get_user_by('id', $user_id);

  echo 'Current user role name: '. $wp_roles->role_names[$current_user->roles[0]]; ?>

this not work!

This will not work as it does not have sense.
You should get comment author value somewhere, possibly from the comment record. I suppose that you put into the $user_id variable.
Then code will be looked like:

global $wp_roles;

// take comment author user ID somewhere. I suppose that you have comment record:
$user = get_user_by('id', $comment->user_id);
echo 'Current user role name: '. $wp_roles->role_names[$user->roles[0]]; ?>

Thats work perfectly thank you!!!!!!!!!!!!!!!!!!!!

is it possible add “Guest” to guest comments?

Add conditional output:

global $wp_roles;

if (!empty($comment->user_id)) {
  $user = get_user_by('id', $comment->user_id);
  echo 'Current user role name: '. $wp_roles->role_names[$user->roles[0]];
} else {
  echo 'Guest';
}

Tahnk you Work Perfect.

Please Help, Tell me how to show in my account page all roles assigned to user, and how to exclude from whith list some roles?
Thank you