In a computer system there are users and printers themselves. Users can print files to a print file queue using a print$\_$file command. Each one of the system printers removes programs from this queue and prints them. Outline the code for the process of putting files on the queue $($the one called by the print$\_$file command$)$ and the process of dequeuing programs $($the one called by printers$).$ To protect the critical parts you can to use the synchronization principle.