@danut_horincas ; We ask posters here to take care that code is properly formatted. It makes the site easier to read, prevents confusion (unformatted code can mistakenly trigger other types of automatic formatting) and generally is considered the polite thing to do. You can read all the details of how to do it here: FAQ: How to make your code look nice? Markdown Formatting
Or try the easy way 
: select any code (whether in blocks or in bits and pieces mixed into your sentences) and click the little </> button at the top of the posting box.