Multiple definition of `motor::adicionarthread()'

kingpk · #1 29-Mar-2008, 01:11

I got three files in my test project:

CPP / C++ / C Code:

//main.cpp
#include <motor.cpp>
int main(){
return 0;}

CPP / C++ / C Code:

//motor.cpp
#include <motor.h>
void motor::adicionarthread(){cout<<"hi";};

CPP / C++ / C Code:

//motor.h
#ifndef MOTOR_H_INCLUDED__
#define MOTOR_H_INCLUDED__

#include <iostream>
#include <fstream>
#include <winsock2.h>

class motor{
public:
void adicionarthread();
};

#endif

I get this error after trying to compile it:

Code:

  multiple definition of `motor::adicionarthread()' 
  first defined here 
  ld returned 1 exit status

but if I remove void motor::adicionarthread(){cout<<"hi";}; of motor.cpp and add this same line to main.cpp, the compilation works.

Blake · #2 29-Mar-2008, 06:31

In main.cpp, you included motor.cpp. You should have included motor.h (and not motor.cpp).

Peter_APIIT · #3 01-Apr-2008, 00:58

I thought you have multiple declaration in your header file and need to overload parameters.

inevitable · #4 01-Apr-2008, 07:37

main.cpp should be looking similar to this

CPP / C++ / C Code:

#include <motor.h>
int main(){
motor m;
m.adicionarthread();
return 0;}

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Multiple definition of `motor::adicionarthread()'

Re: Multiple definition of `motor::adicionarthread()'

Re: Multiple definition of `motor::adicionarthread()'

Re: Multiple definition of `motor::adicionarthread()'