• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Literal values doubt

 
Ranch Hand
Posts: 117
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
hello friends,

I have read that we can have upto 21 digits in an octal number, not including the leading zero.

Can anyone please tell me the maximum number that can be initialized for a variable in octal representation...
 
Ranch Hand
Posts: 1710
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi Raja,


I have read that we can have upto 21 digits in an octal number, not including the leading zero.

Can anyone please tell me the maximum number that can be initialized for a variable in octal representation...



The range is same, don't get confused with octal. 21 digit is the maximum accumulated number an octal number that can be assigned.
If you convert the 21 digit octal (the maximum) to decimal, it will come to the same range a long primitive can hold.


int : 32 bits
long: 64 bits



(0777777777777777777777) (octal maximum range "21 digits excluding 0")
=
(0x7FFFFFFFFFFFFFFF) (hexadecimal, maximum)
=
(1111111111111111111111111111111111111111111111111111111111) (maximum range of 63 bits, a long can hold, excluding sign bit)




Thanks and Regards,
cmbhatt

[ April 07, 2007: Message edited by: Chandra Bhatt ]
[ April 07, 2007: Message edited by: Chandra Bhatt ]
 
Hardik Raja
Ranch Hand
Posts: 117
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hello Mr. chandra,

If you convert the 21 digit octal (the maximum)



which is that maximum value also please tell the maximum for hex(16 digits)

Regards
Hardik
 
Chandra Bhatt
Ranch Hand
Posts: 1710
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Please see my previous post, which I have edited!
Actually I was calculating that for you!

In case of hexadecimal 16 digits are excluding 0x or 0X (in this case Java is not case sensitive "0x" and "0X" keep same meaning).

We are talking about maximum range, and you know long is there to hold them ofcourse.

You calculate yourself what maximum octal and hexadecimal values int can hold.


Did you get it well?

Thanks and Regards,
cmbhatt
[ April 07, 2007: Message edited by: Chandra Bhatt ]
 
Hardik Raja
Ranch Hand
Posts: 117
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
ya i got a bit of it...but still confused

but then why is this giving complilation error( integer number too large )

long b = 0777777777777777777777;

long a = 0x7FFFFFFFFFFFFFFF;
 
Chandra Bhatt
Ranch Hand
Posts: 1710
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator



ya i got a bit of it...but still confused

but then why is this giving complilation error( integer number too large )

long b = 0777777777777777777777;

long a = 0x7FFFFFFFFFFFFFFF;



Hey Raja,
Try this and think, about the bold line I write after these two lines...


Think, what is by default int?

Now is that clear?


Regards,
cmbhatt
 
Hardik Raja
Ranch Hand
Posts: 117
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
oh Thank you Sir...

Well now its clear...as by default it goes in an int
 
Don't get me started about those stupid light bulbs.
reply
    Bookmark Topic Watch Topic
  • New Topic