Code::Blocks Forums

User forums => Using Code::Blocks => Topic started by: rwaves on June 01, 2011, 04:55:44 am

Title: Header file
Post by: rwaves on June 01, 2011, 04:55:44 am

Learning C++ and trying to create a header file to add two intergers.


add.h header file looks like this:

#ifndef ADD_H_INCLUDED
#define ADD_H_INCLUDED

int add(int x, int y);

#endif 


main.cpp source file looks like this:

#include <iostream>
#include "add.h"

int main()
{
  using namespace std; 
  cout << "The sum of 3 and 4 is " << add(3, 4) << endl;
  return 0;
}

Keep getting error:  "In function 'main' undefined reference to 'add(int, int)'. I think my code is OK. Has anyone had trouble with this too? Thank you for your help!!

Title: Re: Header file
Post by: vdave420 on June 01, 2011, 09:51:39 am

Nope.  You haven't defined the function, merely declared it.  You won't be able to link an executable without a corresponding definition for the function.

  -dave-

Title: Re: Header file
Post by: Jenna on June 01, 2011, 11:09:17 am

Absolutely unrelated to C::B and therefore violating our forum rules.

Topic locked !!