perl - The folder shows 3 files but when run the script in CMD it shows extra ` . ` and ` .. `? -

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I have been confused with the situation below, instead of size = 3 5 only got 3 files in my folder as ? . and .. from where?

Code: 

  My $ directory = 'c: \ modules \ SFTP \ New'; Opendir (DIR, $ directory); My @ fils = reddir (dir); Closedir (DIR); Foreign (@file) {print $ _, "\ n"; } My $ size = @files; Print "Size - $ Size \ n";   
  Play Perl:   
 This shows 5 records instead of 3  
 Only 3 files inside my folder were found, but it prints 5 records in CMD. Why is .  and  ..  to show in CMD?  
 Enter image details here  
  update :   
 Thanks minitech and chilemagic then .  and  ..  is the current directory and the original directory.  
 Additional questions: How can I only show the file, so that I  size = 3  If there is no other way, then maybe I should do it manually in a manual way.   
 
 
 .  and  ..  are the current and root directories respectively.  
 This is a common thing to filter by calling:  
  Use strict; Use warnings; Use Autodi; My $ directory = 'c: \ modules \ SFTP \ New'; My @ files = {opendir my $ dh, "$ directory"; Grep {! /^..+$/} reader ($ dh); };   
 Or if you are ok with full path information, you can use one, in which  will not be included.  and  .. .  
  My @ file = globe ("$ directory \\ *")

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