On Tue, Nov 03, 2009 at 07:15:43PM +0800, Majian wrote: > Hi ,all: Hello,
> When I test the increment operator in Perl and find a question : > > The question is : > #!/usr/bin/perl > use warnings; > > my $i = 1; > print ++$i + ++$i, "\n"; > > The above code prints out the answer 6 . > But in the other language the anser is 5 , *The* other language? > So I don't understand the reason why it is > > Would someone give me some options ? You should probably start out by typing "sequence point" into your favourite search engine. Although perl doesn't have sequence points as such, you'll probably be much happier if you assume it does. The reason the answer is six rather than five is pretty much an artifact of the implementation and is not something you should rely upon. > Thanks ~~~ You're welcome. -- Paul Johnson - p...@pjcj.net http://www.pjcj.net -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
