dynamic array/pointer

[amitk3553]

  unsigned int* hci_buffer;                      
  unsigned int hci_buff_size;                    
  hci_buff_size = HCI_DAT_PKT_LEN * HCI_NO_PKTS; //!used macros
  hci_buffer = new(nothrow) unsigned int[hci_buff_size];          

Errors:
ISO C++ forbids declaration of ‘hci_buff_size’ with no type
line no 3: error: ISO C++ forbids initialization of member ‘hci_buff_size’
line no 3: error: making ‘hci_buff_size’ static
line no 3: error: ISO C++ forbids in-class initialization of non-const static member ‘hci_buff_size’
line no 3: error: declaration of ‘int hci_top::hci_buff_size’
line no 3: error: conflicts with previous declaration ‘unsigned int hci_top::hci_buff_size’

[LB]

What code comes before this code? Where is the code located? You have not provided enough information.

[amitk3553]

Its solved, But i have one more question:

unsigned int* hci_buffer;
hci_buffer = new(nothrow) unsigned int[hci_buff_size];

I want to initialize all locations of hci_buffer to zero. How it would be possible instead of initializing each location to zero??

[LB]

Just add empty curly braces between the ending square bracket and the semi-colon:
http://ideone.com/4V4oJQ

[amitk3553]

means if I write like

hci_buffer = {};

then hci_buffer would be initialized to zero;

[LB]

No.

[amitk3553]

then please tell me syntax to initialize hci_buffer

[S G H]

L B wrote:

Just add empty curly braces between the ending square bracket and the semi-colon:
http://ideone.com/4V4oJQ http://ideone.com/4V4oJQ http://ideone.com/4V4oJQ

[Cubbi]

empty pair of parentheses works too (and is pre-C++11, unlike the curlies)

unsigned int* hci_buffer = new unsigned int[hci_buff_size]();

[amitk3553]

hello EssGeEich,

Memory is destructed in the link in which you referred.

I don't want to destruct, just want to initialise with zero(like reset value).

[S G H]

Please read the code carefully.
Besides the fact LB posted the link (which you really didn't notice??), you should check out the 5th line.

There's even a comment - did you see it?

[amitk3553]

int *p = new int[10]{}; //notice the {}

delete[] p;

it means syntax in my case would b

unsigned int *hci_buffer = new int[10]{}; //Means need to add {} at the time of constructing ?

delete[] hci_buffer; //at time when need to initialize to zero?

[S G H]

unsigned int *hci_buffer = new int[10]{};
//Means need to add {} at the time of constructing ? 

^ Yes.
The {} initializes all the elements to 0.

The delete[] goes when you finished using hci_buffer.