Question

I’m trying to create 2 class with the same methods name.
Its an exercise, so i cant change the behavior.

Person.h

#ifndef __PERSON__
#define __PERSON__
#include <iostream>

using namespace std;


class person{
protected:
  string name;
  static int quantity;
private:

public:
  person();
  ~person();
  string getName() const;

  static void add();
  static int getQuantity();

};
#endif

person.cpp

#include "person.h"

int person::quantity=0;
person::person(){}
person::~person(){}
string person::getName() const{
  return this->name;
}


int person::getQuantity(){
  return person::quantity;
}

user.h

#ifndef __USER__
#define __USER__
#include <iostream>
#include "person.cpp"

using namespace std;


class user:public person{
private:
  int age;
  static int quantity;

public:
  user();
  ~user();

  static int getQuantity();
  static void add();

  int getAge();
  void setAge(int age);


};            
#endif

user.cpp

#include "user.h"

int user::quantity=0;

user::user():person(){}
user::~user(){}

int user::getQuantity(){
  return user::quantity;
}
void user::add(){
  user::quantity++;
}
int user::getAge(){
  return this->age;
}
void user::setAge(int age){
  if(age>=0)this->age=age;
}

the problem is ld: duplicate symbol person::getQuantity() in /var/folders/bg/171jl37d05v69c4t6t1tt03m0000gn/T//ccRJU6B9.o and /var/folders/bg/171jl37d05v69c4t6t1tt03m0000gn/T//ccVVSd1i.o for architecture x86_64
collect2: ld returned 1 exit status

but i create the static methods for that specific class. How can i solve that?

Answer 1

Solved… the problem was the #include “person.cpp”