calling dynamic variable of the class

[glitter]

hello everyone,
I defined a variable (invalid_content) in the content-stote-impl.h function as below:

template<class Policy>
class ContentStoreImpl : public ContentStore,
                         protected ndnSIM::trie_with_policy< Name,
                                                             ndnSIM::smart_pointer_payload_traits
< EntryImpl< ContentStoreImpl< Policy > >, Entry >,
                                                             Policy >
{
public:
  typedef ndnSIM::trie_with_policy< Name,
                                   
 ndnSIM::smart_pointer_payload_traits< EntryImpl< ContentStoreImpl< Policy > >, Entry >,
                                    Policy > super;

  typedef EntryImpl< ContentStoreImpl< Policy > > entry;

  static TypeId
  GetTypeId ();

  ContentStoreImpl () { };
  virtual ~ContentStoreImpl () { };

  // from ContentStore

  
virtual void
  Remove (const Name fullKey,Ptr<const Data> data);
double invalid_content; };

and change this variable in the same function as below:

  template<class Policy>
bool
ContentStoreImpl<Policy>::Add (Ptr<const Data> data)
{
  NS_LOG_FUNCTION (this << data->GetName ());

  Ptr< entry > newEntry = Create< entry > (this, data);
  std::pair< typename super::iterator, bool > result = super::insert (data->GetName (), newEntry);

  if (result.first != super::end ())
    {
      if (result.second)
        {
          newEntry->SetTrie (result.first);

          m_didAddEntry (newEntry);
//*************5/13 for caculationg poison contenet
Ptr<Node> node = this->GetObject<Node> ();
if (data->GetSignature ()!=0){
invalid_content++;

}

I want to call this variable in another function (test1.cc) as below:

#include "ns3/ndnSIM/model/cs/content-store-impl.h"

using namespace ns3;
void
CacheEntryRemoved(std::string context, 
Ptr<const ndn::cs::Entry> entry, Time lifetime)
{
   // std::string s=Simulator::GetContext();
    //if ((entry->GetData()->GetSignature()!=0)&&(Simulator::GetContext()==11)){
if (entry->GetData()->GetSignature()!=0){
ContentStoreImpl *Content=new ContentStoreImpl ();
Content ()->invalid_content--;
      }
}

However, I have received error :
In function ‘void CacheEntryRemoved(std::string, ns3::Ptr<const ns3::ndn::cs::Entry>, ns3::Time)’:
../scratch/test1.cc:35:1: error: ‘ContentStoreImpl’ was not declared in this scope
ContentStoreImpl *Content=new ContentStoreImpl ();

I will become thankful, if you guide me to solve this problem
Thanks in advance
best regards

[48bpfSEw]

Did you forget to use the namespace of the class ContentStoreImpl?

By the way : you didn't initialize invalid_content with 0

[glitter]

Thanx u so much for replying.
yes I have not defined namespace but if I define like below
using namespace ns3::ndn::cs::ContentStoreImpl;

I have received the error :
error: ‘ContentStoreImpl’ is not a namespace-name
using namespace ns3::ndn::cs::ContentStoreImpl;

May you please help me how I can access this class(ContentStoreImpl) in test.cc function. However,I think the default value for invalid_content should be zero, if I do not initialize it.
please accept my apologize, since my programming is not good
thanks
regards