private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e)
		 
{
	ifstream ckin("sample.txt");
	int initclock = 0;
	
	if (ckin==NULL)
	{
		MessageBox::Show ("not found");
		ckin.close();
		initclock++;		
	}
	
	if (ckin!=NULL)
	{		
		char checkEmpty;
		ckin.get(checkEmpty);
		if (!ckin.eof()) 
		{textBox1->Text = "file empty";
		ckin.close();
		}
		else 
		{textBox1->Text = "not empty";
		ckin.close();
		initclock++;
		}
	}
	ifstream in("sample.txt");
	string line;
	string match("sample\:");
	int clock = 0 ;
	while (getline(in, line)&&(initclock==0))
		{			
		stringstream sstrm(line);
		string::iterator iter =
		search (line.begin(),line.end(),match.begin(),match.end());
										if (iter != line.end() )
		{
	 iter = find_if( iter +match.length(), line.end(),not1(ptr_fun <int,int> (isspace)));
		if (iter == line.end())
		{
		MessageBox::Show ("No numbers or words after Serial no. :");
		break;
		}
		string::iterator j = find_if (iter, line.end(), ptr_fun <int,int> (isspace));
		string found;
		copy(iter, j, back_insert_iterator <string> (found));
		
		//create a new file based on the word after said word
		//and saved it into the said folder
		string filename = found + ".txt";
		string dirname = "log//";
		string finaldir = dirname + filename;
		ofstream(finaldir.c_str());
		//using ifstream and ofstream to copy content of file to another
		char * fbuffer;
		long fsize;
		ifstream cpy ("sample.txt",ios::binary);
		ofstream target (finaldir.c_str(),ios::binary);
		cpy.seekg(0,ifstream::end);
		fsize=cpy.tellg();
		cpy.seekg(0);
		fbuffer = new char [fsize];
		cpy.read (fbuffer,fsize);
		target.write (fbuffer,fsize);
		delete[] fbuffer;
		cpy.close();
		target.close();
						  
		//write the found word/serial no. into temp.txt
		const char * buffer=found.c_str();
		string str (found.c_str());
		int sizeNum = str.length();
		long size = sizeNum;
		ofstream outfile ("store.txt");
		outfile.write (buffer,size);
		//delete[] buffer;//release dynamically allocated memory
		outfile.close ();
								//textbox update and check if previous saved name is the same as 
	//current one
	textBox2->Text = System::IO::File::ReadAllText("store.txt");
	if (textBox2->Text == label3->Text)						{
		MessageBox::Show ("no. repeated");
		}
		else
		{
		label3->Text = textBox2->Text;
		}
	//try to use an empty file to write and empty a file 
	//which is being used by another program
	char * ebuffer;
	long esize;
	ifstream ecpy ("void.txt",ios::binary);
	ofstream etarget ("sample.txt",ios::binary);
	ecpy.seekg(0,ifstream::end);
	esize=ecpy.tellg();
	ecpy.seekg(0);
	ebuffer = new char [esize];
	ecpy.read (ebuffer,esize);
	etarget.write (ebuffer,esize);
	delete[] ebuffer;
	ecpy.close();
	etarget.close();
	textBox1->Text = "done";
	clock++;
	in.close();
	if (clock!=0)
	break;
}//if iter
	else
	{
	textBox1->Text = "not found";
	}
}//while
}

int main(array<System::String ^> ^args)
{
	// Enabling Windows XP visual effects before any controls are created
	Application::EnableVisualStyles();
	Application::SetCompatibleTextRenderingDefault(false); 

15.	// Create the main window and run it
16. 	Application::Run(gcnew Form1());
17. 	return 0;
18. }