Need help on class interface declaration!!!

[zonique]

Hi all,

i am new to C++, i was trying to declare a class for writing a log file. everyting was fine until i separate interface from implementation! below are the codes :

Log.H
----------------------------------------------
#ifndef LOG_H
#define LOG_H

class Log {
public:
Log ();
~Log();
void appendLog ( string );
void appendLog ( unsigned long );
string readLog ();
void closeFile ();
private:
void openFile ();
ofstream outFile;
};

#endif
----------------------------------------------

Log.cpp
----------------------------------------------
#include <iostream>
using std::cout;
using std::cin;
using std::ios;
using std::cerr;
using std::endl;

#include <fstream>
using std:fstream;

#include <cstdlib>
#include <string>
using std::string;

#include &quot;Log.h&quot;

#define fName &quot;try.log&quot;

Log::Log(){ openFile (); }
Log::~Log(){
if (outFile.is_open())
closeFile();
}

void Log::appendLog ( string logMsg ){
outFile << logMsg << &quot;\r\n&quot;;
}

void Log::appendLog ( unsigned long logMsg ){
outFile << logMsg << &quot;\r\n&quot;;
}

string Log::readLog (){
string str;

return str;
}

void Log:penFile (){
outFile.open ( fName, ios::app );

if (!outFile){
cerr << &quot;File Could Not Be Opened&quot; << endl;
exit(1);
}
}

void Log::closeFile (){
outFile.close();
}
----------------------------------------------

i was facing problem on compilation when i include this header file to other class... i have tried forward declaration but it bring worst.

Thanks,

zonique