[Dev-C++] class forward

[Luís B. <lf...@ya...>]

I'm trying to compile this program in Dev-C++:

------------------------------------------------------

#include <iostream>
#include <stdlib.h>

using namespace std;

class classA;

class classB
{
private:
  int num_classB;
public:
  classB(void)
  {
    num_classB = 0;
  }
  classB(int num)
  {
    num_classB = num;
  }
  void usar_classA(void)
  {
    classA objA;
    objA.set_resultado(10);
    objA.resultado();
  }
};

class classA
{
private:
  int num_classA;
  classB objA;
public:
  classA(void)
  {
    num_classA = 0;
  }
  classA(int num)
  {
    num_classA = num;
  }
  void resultado(void)
  {
    cout << num_classA << endl;;
  }
  void set_resultado(int num)
  {
     num_classA = num;
  }
};

int main(int argc, char *argv[])
{
  
  classB obj;
  obj.usar_classA();
  
  system("PAUSE");	
  return 0;
}

------------------------------------------------------

any help?



=====
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
Luís Filipe Delgado Brás
lf...@ya...
http://www.fotopt.net/autor.asp?autor=2637
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=

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