Hello everybody !

I been trying for hours to figure out how to use countLine in this code. It's a vector class and it use the raw pointers technique which is all new to me. For a simple vector I can use this:

Code:
cout << v_DATA.size();
... but nothing I tried worked in this class of vector. Could someone show me how to get the lineCount (Element Count) to work. Thanks in advance.

Source found here: c++ - How to write the content of different files to a vector for further use with getline - Stack Overflow


Code:
//  ...   You can use a class which handles some raw pointers (For Large Files)

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace std;


class file_vector 
{
public:
  file_vector()
  {}

  virtual ~file_vector()
  {
    for( std::vector< std::ifstream* >::iterator it = 
                    m_file_streams.begin(); it != m_file_streams.begin(); it++)
    {
      std::ifstream * p_stream = *it;
      delete p_stream;
    }
  }

  void append_file(const std::string& file_name)
  {
    std::ifstream * p_stream = new std::ifstream( file_name.c_str() );
    if(p_stream->is_open())
      m_file_streams.push_back(p_stream);
    else
      delete p_stream;
  }

  void reset()
  {
    for( std::vector< std::ifstream* >::iterator it = 
                      m_file_streams.begin(); it != m_file_streams.end(); it++)
    {
      std::ifstream * p_stream = *it;
      p_stream->seekg(0,p_stream->beg);
    }
  }

  size_t size()
  {
    return m_file_streams.size();
  }

  std::ifstream & get(size_t index)
  {
    return * m_file_streams.at(index); // Using at because of index check
  }

  std::ifstream & operator [] (size_t index)
  {
    return get(index);
  }

private:
  std::vector< std::ifstream* > m_file_streams;
};


int main()
{
  file_vector files_content;
  files_content.append_file("file1.txt");
  files_content.append_file("file2.txt");
  files_content.append_file("file3.txt");

  for(size_t i = 0; i < files_content.size(); i++)
  {
    std::string current_line;
    while(std::getline(files_content[i],current_line))
      std::cout << current_line << std::endl;
  }

  files_content.reset(); // To make getline usable again


 cin.get();
 	return 0;
}