Everybody here seems to be focussing on the newlines... which is nice, but depending on your platform (you dn't mention that), it might just as well be the carriage return character, "\r", that trips you up, instead of the newline "\n". On Unix, the visible effect would just be that the second half of a string starts again on the far left of your screen, but on Windows, some helpful text editors actually treat this the same as a newline ("\n").

The way to get rid of them is very much alike to the way to get rid of unwanted embedded "\n" characters.

p.s. I was not trying to be sarcastic, text editors that do that really are helpful, as they try to deal with platform-foreign text files in a nice manner.