Arrays

[Vineela Devi]

Hi,

 int []a5,a6[];  

In the above line of code, is it true tht a5 represents a single dimension array and a6 represents two dimensional array?
pls correct me if iam wrong.
Regards
Vineela

[Gian Franco]

Hi Vineela,

is it true tht a5 represents a single dimension array and a6 represents two dimensional array?

it's true, try the following to verify:

int []a5,a6[];
a5 = new int[] {1,2,3};
a6 = new int[][] {{4,5,6},{7,8,9}};
System.out.println(a5[2] + " " + a6[1][2]);

Greetings
Gian Franco
[ April 02, 2004: Message edited by: Gian Franco Casula ]

[Vineela Devi]

Hi Gian,
Thanks. I got it.
Regards
Vineela

[fethi makhlouf]

Hi
that's right, but be careful .....
int [] a , b [] ; // a 1dimension, b 2 dimensions
int [] a , [] b ; // Compiler error!
pay close attention!

[Giuoco Krag]

This confuses me... Grr..!
Is it because after the "comma" && the brackets are "after" variable b?
what about three? Such as: int []a,b[],c[] ??
Thanks in advance. For some reason this syntax has got me confused.

[fethi makhlouf]

Hi
don't be confused! it needs just a close attention
Look to that :
int a , b , c ; // a b c are int!
int [] a , b ,c ; // a b c are int []
now if you want to tell the compiler you are defining int [] a b and int [] [] c in the same line :

int [] a , b, [] c ; // is false
int [] a , b, c [] ; // is true!
why ? 'cause just after comma, the compiler waits for an identifier, when it finds [] he stops to tell you there is an error!
is it clear?

[Suresh Thota]

Scot,
Remember the rules.
1. The brackes for an array declaration can be placed after the type or after the identifier.
2. If the bracket is placed after the type, that dimenstion applies to all identifier's in that statement.
Cheers
-Suresh