C++ Undefined reference to functions

Question

I hope you will help me. So,I have this class and whenever I try to compile the main.cpp I get the errors: Undefined reference to 'Sally::Sally()', to 'void Sally::print()' and twice for 'Sally::~Sally()'

here is my header file:

#ifndef SALLY_H
#define SALLY_H


class Sally
{
    public:
        Sally();
        void print();
        virtual ~Sally();
    protected:
    private:
};

#endif // SALLY_H

here is my Sally.cpp file

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

Sally::Sally()
{

}
void Sally::print()
{
  cout<<"print something"<<endl;
}

Sally::~Sally()
{

}

here is my main.cpp file

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

int main()
{
    Sally salObj;
    salObj.print();

}

I saw a comment here that I should include the 3 files in a project but whenever I do I make a Console Application and it prints out "Hello world" even though I don't even have that anywhere. I'd love if someone can help me,I've been bugged with this for a couple of days and nothing seems to make it better.

Very hard to help with this from a distance. The problem is not the code, it's your understanding of Code::Blocks. Try and find someone who can sit down with you and show you what you are doing wrong. BTW you do need to create a project and add all your files to it, but obviously you are doing that wrong somehow. — john
– john, Commented Oct 6, 2013 at 11:59

hauzer · Accepted Answer · 2013-10-06 12:15:48Z

3

Code::Blocks adds a default main.cpp file to a Console Application project. You need to remove that file, and add your own files by right clicking on the project name -> "Add files...". Make sure that you add all three files.

Remove main.cpp Add your files

answered Oct 6, 2013 at 12:15

hauzer

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1 Comment

hauzer Over a year ago

@user2851616: I'm glad I could have helped! Please accept the answer if it answers your question. Thanks!

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