LNK2001

[Marciano Gonçalves]

Pessoal tou com dificuldades em compilar um simples programa em C++.

O programa é o seguinte:

#include "interval.hpp" // predefined interval arithmetic

#include <iostream>

#include <conio.h>

using namespace cxsc;

using namespace std;

#define _HAS_EXCEPTIONS 0;

#define _STATIC_CPPLIB ;

int main()

{

interval a, b; // Standard intervals

a = 1.0; // a = [1.0,1.0]

b = 3.0; // b = [3.0,3.0]

//cout << "a/b = " << a/b << endl;

std::cout << a << std::endl;

getch();

return 0;

}

MAs sempre me retorna o seguinte eerro:

Teste.obj : error LNK2001: unresolved external symbol "class std::basic_ostream<char,struct std::char_traits<char> > & __cdecl cxsc::operator<<(class std::basic_ostream<char,struct std::char_traits<char> > &,class cxsc::interval const &)" (??6cxsc@@YAAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@AAV12@ABVinterval@0@@Z)

C:\Documents and Settings\Marciano\Meus documentos\Visual Studio 2005\Projects\Fuzzy\Release\Fuzzy.exe : fatal error LNK1120: 1 unresolved externals

Build log was saved at "file://c:\Documents and Settings\Marciano\Meus documentos\Visual Studio 2005\Projects\Fuzzy\Fuzzy\Release\BuildLog.htm"

Fuzzy - 2 error(s), 0 warning(s)

O que pode estar acontecendo de errado?

PS.: Tou usando o VC++ 2005. Já usei o 2008 mas erros aumentam!