File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Beginning Java and the fly likes simple int Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


JavaRanch » Java Forums » Java » Beginning Java
Bookmark "simple int" Watch "simple int" New topic
Author

simple int

PUNNU GULATI
Greenhorn

Joined: Feb 19, 2001
Posts: 6
hello everyone
int i;
i=i++;
s.o.p(i);
result is 0
why
Lalit Sha
Greenhorn

Joined: Jan 11, 2001
Posts: 28
Punnu,
Could you please write the code completely.
Lalit.
Scott Pedigo
Greenhorn

Joined: Feb 15, 2001
Posts: 15


[This message has been edited by Scott Pedigo (edited February 19, 2001).]
Grant Crofton
Ranch Hand

Joined: Nov 08, 2000
Posts: 154
Like Scott says, when you do

i gets incremanted after the assignment, so x==0;
if you did

i would be incremanted before the assignment, so x==1.
You wouldn't normally do i=i++ - perhap's you're thinking of i++ or i+=1 or i=i+1, which all simply increment i by 1.
Frank Carver
Sheriff

Joined: Jan 07, 1999
Posts: 6920
As an aside, I feel strongly that pre-increment (++i) works in a much more intutive way than post-increment (i++), and blame lots of textbook and programming standards writers (starting with Kernighan and Richie) for using post-increment so much where it is not needed.
Personally, I always use pre-increment unless I have a real need for the special behaviour of post-increment, and I try and teach my development teams the same habit.


Read about me at frankcarver.me ~ Raspberry Alpha Omega ~ Frank's Punchbarrel Blog
sona gold
Ranch Hand

Joined: Feb 14, 2001
Posts: 234
when u say
int i;
i = i++;
System.out.println(i)
The output is 0 because
in
int i ;
i is set to 0
then when u say
i = i + +
this means increment the value of i after performing the task assigned
in this case the task is System.out.println(i)
hence o
if u put it in a loop
the next time
i = i ++ is executed
it will print 1

sona<br />SCJP
Grant Crofton
Ranch Hand

Joined: Nov 08, 2000
Posts: 154
Yeah, I was always taught post-increment, and now I always use it unless I have a reason not to. I suppose pre-increment is more intuative, but you tend to get into a 'style', don't you.
I think maybe people teach i++ because it's more like i=i+1. Or maybe it just rolls of the tongue easier.
Frank Carver
Sheriff

Joined: Jan 07, 1999
Posts: 6920
Depends how you say it. I find "increment i" to be more sensible to say that "i increment" (which usually begs the question "you increment what?")
Cindy Glass
"The Hood"
Sheriff

Joined: Sep 29, 2000
Posts: 8521
Java humor


"JavaRanch, where the deer and the Certified play" - David O'Meara
Grant Crofton
Ranch Hand

Joined: Nov 08, 2000
Posts: 154
i plus plus.
 
GeeCON Prague 2014
 
subject: simple int