Unresolved token ERROR

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jazihak@gmail.com - 10 Aug 2007 22:38 GMT

Can any one tell me how to resolve this issue;

I have the following function

//hello.cpp
#include "stdafx.h"
#include <stdlib.h>
#include <vcclr.h>
#include <string>
namespace Wrapper
{

String^ Wrapper_Class::sayHello(void){
String^ str="Hello";
return str;
}
}

//hello.h
#pragma once

#include "string"
#include <stdio.h>
#include <stdlib.h>
#include "stdafx.h"

using namespace System::Runtime::InteropServices;
using namespace System;
using namespace std;

String^ Wrapper_Class::sayHello(void)

Here is the ERROR message I keep getting
error LNK2020: unresolved token (06000012)
Wrapper.Wrapper_Class::sayHello
fatal error LNK1120: 1 unresolved externals

Can any one tell me what am I doing wrong? or how to resolve it? Is
there any headers that I need to include?

Thank you...
JZ

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Dave Heinemann - 17 Aug 2007 02:22 GMT

hello.cpp needs to include hello.h

Of course C++ error messages make it sound complex. The language has dozens
of keywords, thousands of error messages.

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Ben Voigt [C++ MVP] - 17 Aug 2007 21:02 GMT

> Can any one tell me how to resolve this issue;
>
[quoted text clipped - 13 lines]
> }
> }

This definition is inside namespace Wrapper.

> //hello.h
> #pragma once
[quoted text clipped - 9 lines]
>
> String^ Wrapper_Class::sayHello(void)

This prototype is in the global namespace. Additionally, it forward
declares that a namespace (you can't prototype class members outside the
class definition) Wrapper_Class exists containing a global function
sayHello. When the linker doesn't find it, it gives the unresolved token
error.

> Here is the ERROR message I keep getting
> error LNK2020: unresolved token (06000012)
[quoted text clipped - 6 lines]
> Thank you...
> JZ

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Unresolved token ERROR

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