How can delete a user without deleting the post and comments in wordpress?

If you want to delete a user /Editor/Subscriber/Author/Administer without deleting the post and comments. When you start deleting the post application will be prompt that you want to assign the post to another user. To keep the user’s post, this you have to assign the deleting user post to another user.
You want to follow the following steps.

1. Login as Administrator (must be not login to whom you are going to delete).
2. Go to User Listing.
3. Click on check box in front of user to whom you want to delete.
4. Click on delete icon. It will bring to you new page.
5. Now assign all post to another user/administrator.
6. Click on “Confirm Deletion”. User deleted successfully.
7. Now deleting the user, same user wouldn’t be able to login to system. If he is currently login will logout automatically.