Error C2447, C2143, C2059: Basic Visual C++ Class Definition

I'm just trying to create a class in visual C++ but keep getting the three errors mentioned above:

Line 9: error C2447: '{' : missing function header (old-style formal list?) in UIAutomationCPP.cpp

Line 9: error C2143: syntax error : missing ';' before '{' in UIAutomationCPP.cpp

Line 9: error C2059: syntax error : ')' in UIAutomationCPP.cpp

My code for the project is as follows:

// File Name: AutomationCPP.h
#pragma once
#ifndef AUTOMATIONCPP_H
#define AUTOMATIONCPP_H

#include "Stdafx开发者_开发知识库.h"

using namespace System;

namespace AutomationCPP
{
    public ref class CustomAutomationCPP
    {
    public:
        CustomAutomationCPP();
        int first;

    private:
        int second;
    };
}
#endif

And the class .cpp file:

// File Name: AutomationCPP.cpp
#include "Stdafx.h"
#include "AutomationCPP.h"

using namespace System;

AutomationCPP::CustomAutomationCPP()
{
}

Please help! I feel if I can get past this, the rest should be much easier.

A constructor is a special member function:

AutomationCPP::CustomAutomationCPP::CustomAutomationCPP()
{
}

Alternatively to Etienne's, which I find personally more readful as it removes some noise from the members:

namespace AutomationCPP {

CustomAutomationCPP::CustomAutomationCPP()
{
}

void CustomAutomationCPP::foo()
{
}

// ...

} // namespace AutomationCPP