Question

I have a main class in which Im trying to call on a function to create the menu but I keep getting this error:

error LNK2019: unresolved external symbol “public: static int __cdecl Controller::menu(void)” (?menu@Controller@@SAHXZ) referenced in function _main

This is my main class.

#include "Main.h"

using namespace std;

int main () 
{
Control:: menu();
return 0;
}

this is the Main.h

#pragma once
#include "Control.h"
class Main:
{
public:
Main(void);
~Main(void);
int main();

};

the Control.h:

#pragma once
#include <iostream>

class Control
{
public:
Control(void);
~Control(void);
 static int menu ();
};

and finally the control cpp file:

#include "Control.h"
using namespace std; 

static int menu () 
{
  bunch of menu code
 return 0;
}

I think it’s something simple but I just cant figure it out. I tried removing static as well as changing the function to a void function, but neither worked.

Answer 1

static int menu () 
{
  bunch of menu code
 return 0;
}

should be

int Control::menu () 
{
  bunch of menu code
 return 0;
}

That’s the proper way of defining members.