Thread: undefined reference

I've just managed to compile a class I called CString
When I try to implement this class in a program I get
C:\WINDOWS\TEMP\ccJwtegb.o(.text+0x2a):test1.cpp: undefined reference to `CString::CString(char const *)' error. I have no idea what this means, Im guessing it has something to do with the linker but other than that Im lost.

Using this to test my CString :

Code:

#include <iostream>
using namespace std;
#include "CString.h"

int main()
{
 CString text;
 return 0;
}

Appreciate any response.

Header file

Code:

#ifndef CString_H
#define CString_h
#include <iostream>

using namespace std;

class CString
{
 public:
    int main( void);
    CString( void );
    CString(const char* string);
    ~CString();
    int GetLength();
    bool IsEmpty();
    void MakeEmpty();
 private:
    int length(const char* p);
    char *pstring;
    int m_iSize;

};
#endif

Source file:

Code:

#include "CString.h"

using namespace std;

int main( void ){return 0;}

CString::CString( void ) {m_iSize=0;}

CString::CString(const char* string)
{ m_iSize = length(string); }

CString::~CString()  {pstring=0; delete pstring;}

int CString::GetLength()  {  return m_iSize; }

bool CString::IsEmpty()   {  return (m_iSize==0); }

void CString::MakeEmpty() {  m_iSize=0; pstring=0;}

int CString::length (const char* p) { }

The Cstring.h and CString.cpp compile ok.

Then I use this very simple program to test the class:

Code:

using namespace std;

#include "CString.h"

int main()
{
 CString text;
 return 0;
}

In this file I get the above mentioned errors.

Thanks for your response.

I get a weird error if I leave int main() out - undefined reference to `WinMain@16' - according to Dev-C++ faq inserting int main resolved it. So I doubt thats the solution.

btw, using win98 and Dev-c++ 4.0

Btw, can anyone recommend any other free ide software for c++ ?