Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Arrays in C++
Top Forums Programming Arrays in C++ Post 302659835 by achenle on Thursday 21st of June 2012 12:44:13 PM
Old 06-21-2012
Quote:
Originally Posted by Corona688
Are they ever anything but a pointer? The only difference when it's local is, it knows it's a const one whose base can't be changed...
Yes, there's a difference. A reference in code to a non-subscripted array is evaluated as the address of the first element of the array. That's not quite the same as a pointer. A pointer can be an l-value, a "naked" array reference can't be.

Thus

Code:
foo( char *bar )
{
    .
    .
    .
    bar++;
    .
    .
    .
}

is fine, but

Code:
foo( char bar[] )
{
    .
    .
    .
    bar++;
    .
    .
    .
}

should (offhand) result in a syntax error, even though both could be called like this:

Code:
char a[ 32 ];
   .
   .
   .
foo( a );
   .
   .
   .

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Arrays

Dear all, How can i unset arrays. I mean all the subscripts including the array after using them. Could you direct me to some links of array memory handling in the korn shell. Thanks (2 Replies)
Discussion started by: earlysame55
2 Replies

2. Web Development

PHP arrays in arrays

PHP question... I have an SQL query that's pulled back user IDs as a set of columns. Rather than IDs, I want to use their names. So I have an array of columns $col with values 1,7,3,12 etc and I've got an array $person with values "Fred", "Bert", "Tom" etc So what I want to do is display the... (3 Replies)
Discussion started by: JerryHone
3 Replies

3. UNIX for Dummies Questions & Answers

arrays how to?

Hello, I am some what of a newbie to awk scripting and I seem to be struggling with this problem. I know I need to use arrays but I can't figure out how to use them. I have an input file that looks like this; Name,Team,First Test, Second Test, Third Test Crystal,Red,5,17,22... (1 Reply)
Discussion started by: vlopez
1 Replies

4. HP-UX

Hitachi arrays to HP-UX 11.11

We have 2 servers (L1000 and rp7410) running 11.11. We would like to hook them up to either a Hitatchi AMS 2500 or Hitachi USPV via fiber channel. I need to what drivers I need for this and if it will work. Oh, they are using HP Tachyon XL2 Fiber Channel Mass Storage Adapters. Thanks, Bill (1 Reply)
Discussion started by: wsmcelroy
1 Replies

5. Shell Programming and Scripting

2d arrays in unix

hi everybody can anyone help me with usage of 2 dimensional arrays in unix. please provide a suitable example for accessing individual elements as well as all elements. Thanks (2 Replies)
Discussion started by: jpriyank
2 Replies

6. Shell Programming and Scripting

Using arrays in shell

I have three arrays. One is Master array and that has list of other array in config file. for e.g (for simplicity I have only defined array with 2 elements each) set +A MASTERARRAY SQLUPDATE_ONETIME SQLUPDATE_DAILY END_OF_ARRAY set +A SQLUPDATE_ONETIME update12 update22 END_OF_ARRAY... (4 Replies)
Discussion started by: anish
4 Replies

7. Programming

question about int arrays and file pointer arrays

if i declare both but don't input any variables what values will the int array and file pointer array have on default, and if i want to reset any of the elements of both arrays to default, should i just set it to 0 or NULL or what? (1 Reply)
Discussion started by: omega666
1 Replies

8. Shell Programming and Scripting

How can I use the arrays ?

Hi all, I have a file test1.txt with the below contents abc def ghj xyz I tried printing these values using arrays. Script tried : =========== set -A array1 `cat test1.txt` count=${#array1 } i=0 while do echo "element of array $array1" done (1 Reply)
Discussion started by: dnam9917
1 Replies

9. Shell Programming and Scripting

Using arrays?

I have never used arrays before but I have a script like this: var1=$(for i in $(cat /tmp/jobs.021013);do $LIST -job $i -all | perl -ne 'print /.*(\bInfo.bptm\(pid=\d{3,5}).*/' | tr -d "(Info=regpid" | tr -d ')'; $LIST -job $i -all | cut -f7 -d','| sed -e "s/^\(*\)\(*\)\(*\)\(.*\)/\1... (2 Replies)
Discussion started by: newbie2010
2 Replies

10. UNIX for Dummies Questions & Answers

Arrays

Am using bash For eg: Suppose i have a array arr=(1 2 3 4 5 6 7 8 9 10 11 12) suppose i give input 5 to a script and script should able to print values greater than or equal to 5 like below: Input: 5 output: 5,6,7,8,9,10,11,12 (7 Replies)
Discussion started by: manid
7 Replies

LEARN ABOUT OSX

xml::parser::style::tree

Parser::Style::Tree(3)					User Contributed Perl Documentation				    Parser::Style::Tree(3)

NAME

       XML::Parser::Style::Tree

SYNOPSIS

	 use XML::Parser;
	 my $p = XML::Parser->new(Style => 'Tree');
	 my $tree = $p->parsefile('foo.xml');

DESCRIPTION

       This module implements XML::Parser's Tree style parser.

       When parsing a document, "parse()" will return a parse tree for the document. Each node in the tree takes the form of a tag, content pair.
       Text nodes are represented with a pseudo-tag of "0" and the string that is their content. For elements, the content is an array reference.
       The first item in the array is a (possibly empty) hash reference containing attributes. The remainder of the array is a sequence of tag-
       content pairs representing the content of the element.

       So for example the result of parsing:

	 <foo><head id="a">Hello <em>there</em></head><bar>Howdy<ref/></bar>do</foo>

       would be:
		    Tag   Content
	 ==================================================================
	 [foo, [{}, head, [{id => "a"}, 0, "Hello ",  em, [{}, 0, "there"]],
		     bar, [	    {}, 0, "Howdy",  ref, [{}]],
		       0, "do"
	       ]
	 ]

       The root document "foo", has 3 children: a "head" element, a "bar" element and the text "do". After the empty attribute hash, these are
       represented in it's contents by 3 tag-content pairs.

perl v5.16.2							    2011-05-24						    Parser::Style::Tree(3)
All times are GMT -4. The time now is 07:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy