how could I make it skip a line after each?
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I tried ' << "\n"; but dind't work either.
What do you mean "didn't work"? If you remove it it gives you same result as if it was here?
To skip a line you need: print linefeed symbol to move to the next line; prine linefeed symbol again to move to the next line and leave one empty.
So you need to write "\n\n" instead of endl.
And one more: do not use endl. Prefer '\n' instead. Use it only when you need flushing the buffer (which is almost never). Such buffer flushing can seriously slow down your program.