C++: no new line at the end of file

Cyhaxor · 01-27-2009, 07:48 AM

Hello,

I'm playing around with C++ and I discovered that if you save a source file and you don't put an empty line after the last '}' (you don't press enter) the compiler compiles your source but with a warning message. Why is that happening? Is there anything that can goes wrong if I don't put an end line? That is not a problem for me but I'm just asking to satisfy my curiosity

and learn something..

Thanks in advance

knudfl · 01-27-2009, 08:59 AM

C++ Standard [2.1.1.2] declares:

... If a source file that is not empty does not end in a new-line character,
or ends in a new-line character immediately preceded by a backslash character
before any such splicing takes place, the behavior is undefined.

( google ... no new line at the end of file ... )
....

tuxdev · 01-27-2009, 12:47 PM

You should try using a different text editor with your source file. Every decent editor nowadays should end every line with an end of line character (sounds kind of stupid, doesn't it?), including the last line of the file.

wje_lq · 01-27-2009, 01:18 PM

Quote:

Every decent editor nowadays should end every line with an end of line character (sounds kind of stupid, doesn't it?), including the last line of the file.

Yeah, I hate that feature.

Cyhaxor · 01-27-2009, 04:11 PM

I'm using kwrite. I don't know if kwrite is considered to be an old editor but I'm covered with knudfl's answer

Thanks.