what are the controls for print screen
So again, re-emphasizing the shortcut keys: Command+Shift+3 will print the screen to a file on the Mac desktop, while Command+Control+Shift+3 will print the screen to the clipboard just like the Windows function works. Remember the difference between the two, and use which works best for you.
1 Command+Control+Shift+3: take a screenshot of the entire screen, and saves it directly to the clipboard for pasting elsewhere.  Command+Control+Shift+4, then select an area: takes a screenshot of the selection using the rectangular drawing box, and saves it to the clipboard for pasting elsewhere.