添加新类出现的有关问题!请高手解答

添加新类出现的问题!请高手解答!
我新建个MyHMMCWS项目

在   CMyHMMCWSDlg.h中   #include   "myList.h "
出现如下编译错误!

myList.obj   :   error   LNK2019:   unresolved   external   symbol   "public:   __thiscall   mynode::mynode(class   ATL::CStringT <wchar_t,class   StrTraitMFC_DLL <wchar_t,class   ATL::ChTraitsCRT <wchar_t>   >   > ,double   *,class   mynode   *) "   (??0mynode@@QAE@V?$CStringT@_WV?$StrTraitMFC_DLL@_WV?$ChTraitsCRT@_W@ATL@@@@@ATL@@PANPAV0@@Z)   referenced   in   function   "public:   int   __thiscall   myList::append(class   ATL::CStringT <wchar_t,class   StrTraitMFC_DLL <wchar_t,class   ATL::ChTraitsCRT <wchar_t>   >   > ,double   *) "   (?append@myList@@QAEHV?$CStringT@_WV?$StrTraitMFC_DLL@_WV?$ChTraitsCRT@_W@ATL@@@@@ATL@@PAN@Z)
D:\VC     work\MyHMMCWS\Debug\MyHMMCWS.exe   :   fatal   error   LNK1120:   1   unresolved   externals

看不懂,MyHMMCWS项目仅仅添加了变量,

现在把myList类代码贴出来:

//-----------myList.h------------
#pragma   once


class   myList;
class   mynode{
public:
friend   class   myList;
mynode(CString   word,double   *data,mynode   *link);   //构造函数
private:
CString   word;
double   *data;
mynode   *link;
};
class   myList
{
public:
myList(void);

int   append(CString   words,double   *datas);

~myList(void);

private:

mynode   *first,*last;
};

mynode::mynode(CString   cword,double   *cdata,mynode   *clink)
{
this-> data=cdata;
this-> word=cword;
this-> link=NULL;

}

//--------------------------

//---------------myList.cpp-------

#include   "StdAfx.h "
#include   "myList.h "

myList::myList(void)
{
first=last=NULL;
}
int   myList::append(CString   words,   double   *datas)
{
mynode   *newnode=new   mynode(words,datas,NULL);
if(first=NULL)
{
first=last=newnode;
}
else   {
last-> link=newnode;
last=newnode;
}
return   1;

}
myList::~myList(void)
{
}


//-------------
如果不include就能编译成功,请达人解释!!


------解决方案--------------------
myList.cpp文件有没有添加到项目中?或者说,实现错误中的那些符号的文件有没有编译连接?
------解决方案--------------------
我实验了一下你的代码,并没有发现问题哦。

跟你的似乎没有区别,我直接使用 insert 添加的新类 .h 文件

// myList.h: interface for the myList class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MYLIST_H__2B0ED090_E1D2_43F7_84EF_E93529DFAFF5__INCLUDED_)
#define AFX_MYLIST_H__2B0ED090_E1D2_43F7_84EF_E93529DFAFF5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class myList;
class mynode{
public:
friend class myList;
mynode(CString word,double *data,mynode *link); //&sup1;&sup1;&Ocirc;ì&ordm;&macr;&Ecirc;&yacute;
private:
CString word;
double *data;
mynode *link;
};
class myList
{
public:
myList(void);

int append(CString words,double *datas);

~myList(void);