Логирование работы программы

//Это хедер logging.h
#include "stdafx.h"
#include <iostream>
#include <conio.h>
using namespace std;
using namespace System;
using namespace System::IO;
class Logging
{
public:
    static void WriteToLog()
    {
        FileStream^ fs = gcnew FileStream( "c:\\temp\\TestLog.txt",FileMode::Append,FileAccess::Write,FileShare::Write );
        fs->Close();
        StreamWriter^ sw = gcnew StreamWriter( "c:\\temp\\TestLog.txt",true,Encoding::ASCII );
        String^ NextLine = "This is the appended line.\n";
        sw->WriteLine( NextLine );
        sw->Close();
    }

//А это сама программа ligging.cpp
#include "stdafx.h"
#include "logging.h"
 
 
int main()
{
    void WriteToLog();
 
}

#include "stdafx.h"
#include "logging.h"
 
 
int main()
{
    Logging::WriteToLog();
 
}

};

System::Text::Encoding::ASCII

FileStream^ fs = gcnew FileStream( "c:\\temp\\TestLog.txt",FileMode::Append,FileAccess::Write,FileShare::Write );
StreamWriter^ sw = gcnew StreamWriter( "c:\\temp\\TestLog.txt",true,Encoding::ASCII );
String^ NextLine = "This is the appended line.\n";