Why is it that gcc give a warning?

[griffinn]

Originally posted by PulseDriver
The reason is that you don't have the right linebreak... some windows programs makes the wrong linebreak charcode.. if you have ever opened a document in Notepad or similar and everything in the document is on a single line with black boxes in between the words, that's the correct type of linebreak that shuts up gcc.exe

That's not the real reason.

The real reason is that it's conventional to have a blank line at the end of a program source. When most programmers do it and you have a file without the blank line, it's probable that the file was not downloaded completely, or truncated at the wrong position, etc.. gcc is just being nice by reminding you to double-check the file for completeness.