topic Re: Accessing multidimensional char array in Operating System - HP-UX

Accessing multidimensional char array

Leepika Mukherjee — Thu, 31 Mar 2011 07:58:51 GMT

Hi Everyone,

I am facing problem in running the following code of multidimensional char array. The program is properly compiled but while running it provides a default output instead of characters matrix. Kindly help me in this.

class CharArray
{
public static void main(String ar[])
{

char ca=new char[2][2];
ca[0][0]='a';
ca[0][1]='b';
ca[1][0]='c';
ca[1][1]='d';

for(int i=0;i {
for(int j=0;j {
ca[i][j]=(char)i;
System.out.print(a[i][j]);
}
System.out.println("");
}
}
}

Re: Accessing multidimensional char array

Dennis Handly — Sat, 02 Apr 2011 06:07:48 GMT

I assume this is java.

>ca[i][j]=(char)i;

Any reason you are putting control chars into your array?

You might want to print out "i" and "j" so you know you are going through your nested loops properly.

Re: Accessing multidimensional char array

Leepika Mukherjee — Tue, 05 Apr 2011 06:29:17 GMT

Hi,

I couldnt understand ur question. I want to print matrix of characters(a,b,c,..). I am unable to do it as I m getting default symbols while I run the program. So I need ur help to get proper output, as I am unable to judge where exactly I am missing.
The same program I have made for number matrix and its running exactly as needed. Only for char I couldnt make it out.
Kindly help me in this.

Re: Accessing multidimensional char array

Dennis Handly — Tue, 05 Apr 2011 07:02:17 GMT

>I'm getting default symbols while I run the program

What default symbols?
You should redirect the output to a file an get a hex dump on that file:
xd -tc -tx1 file

>Only for char I couldn't make it out.

As I said, you are putting control chars into the array, not the characters:
ca[i][j]=(char)i;

Leave this out if you want that initial "a" ... "d".

Re: Accessing multidimensional char array

Leepika Mukherjee — Tue, 05 Apr 2011 07:10:40 GMT

Kindly provide me the simplest program which can display multidimensional car array. I am getting confused so leave the previous program and guide me in a simplest way.

Re: Accessing multidimensional char array

Dennis Handly — Wed, 06 Apr 2011 01:22:34 GMT

>provide me the simplest program which can display multidimensional char array.

Only if you want a C source.

Re: Accessing multidimensional char array

Leepika Mukherjee — Wed, 06 Apr 2011 07:00:57 GMT

I mean to say the program should be in Java.. Kindly help me.

Re: Accessing multidimensional char array

Dennis Handly — Wed, 06 Apr 2011 10:19:57 GMT

>I mean to say the program should be in Java

I can't help you there.
But as I said, try removing: ca[i][j]=(char)i;

Re: Accessing multidimensional char array

Leepika Mukherjee — Wed, 06 Apr 2011 13:42:09 GMT

I already tried removing that but getting error again.totally confused. kindly provide me a similar program in java so that I can understand the error I am doing. For number matrix I had done similar coding as below and its giving exact output :-

class TwoDArray
{
public static void main(String ar[])
{
int[][] twod=new int[5][5];
for(int i=0;i {
for(int j=0;j {
twod[i][j]=i;
System.out.print(+twod[i][j]);
}
System.out.println("");
}

}
}
Output :-

00000
11111
22222
33333
44444

Kindly help me in coding similar program for displaying char matrix..
a b
c d

Re: Accessing multidimensional char array

Dennis Handly — Thu, 07 Apr 2011 04:41:42 GMT

>help me in coding similar program for displaying char matrix.

If you already have these initializers: ca[0][0]='a';
You don't need: ca[i][j]=(char)i;

In C you could do:
ca[i][j]=(char)(i*2 + j + 0x40);
Or even better, assuming ASCII:
ca[i][j]=(char)(i*2 + j + ('a' - 1));

Re: Accessing multidimensional char array

Leepika Mukherjee — Mon, 11 Apr 2011 05:55:01 GMT

Can anyone plzzzz. write provide me the complete java program for this as I have mentioned the coding which I have done and also I have tried removing the ca[i][j]=(char)i; as per ur suggestion but still getting errors.

Kindly provide me the complete program for this.