Ошибка в классах

#include "Printers.h"
#include <iostream>
#include <string.h>
#include "Matrix.h"
#include "Str.h"
#include "Laz.h"
using namespace std;
 
Printers::Printers(void)
{
int i, j;
Printers *p[3];
p[1] = new Matrix ("Seiko", "low", 40);
p[2] = new Str ("BJ-80", "medium", 60, "Termo");
p[3] = new Laz ("LaserJet", "high", 72, "Piezoelectric", "Suvenir");
for (int i = 0; j<3; i++)
p[i]->Print();
cout <<p[i]->marka();
cout <<p[i]->speed();
cout <<p[i]->quality();
cout <<p[i]->Smetod();
cout <<p[i]->tipmat();
}

#pragma once
#include "printers.h"
 
class Matrix : public Printers
{
public:
Matrix ();
Matrix (char*marka, char*quality, int speed);
Matrix (const Matrix & r);
~Matrix();
void Print () const;
protected:
char *marka;
int speed;
char*quality;
};

#include "printers.h"
#include "Matrix.h"
#include <iostream>
#include <string.h>
 
using namespace std;
Matrix :: Matrix () : quality ("low"), speed (40)
{
marka=new char [50];
strcpy (marka, "Epson");
}
Matrix :: Matrix (char*_marka, char*_quality, int _speed) : quality(_quality), speed(_speed)
{
marka = new char[strlen(_marka)+1];
strcpy (marka,_marka);
}
Matrix :: Matrix (const Matrix & r) : quality (r.quality), speed (r.speed)
{
marka = new char[strlen (r.marka) +1];
strcpy (marka, r.marka);
}
Matrix :: ~Matrix ()
{
delete[]marka;
}
void Matrix :: Print () const
{
cout << "Matrix printer" << endl;
cout << marka << endl;
cout << quality << endl;
cout << speed << endl;
}

class Printers
{
public:
    Printers::Printers(void);
    virtual ~Printers(){}
    virtual void Print() const=0;
    virtual char*marka() const=0;
    virtual char*quality() const=0;
    virtual int  speed() const=0;
    virtual char*Smetod() const=0;
    virtual char*tipmat() const=0;
};
 
реализована только функция Print. все остальные тоже нужно реализовать.
    virtual char*marka() const=0;
    virtual char*quality() const=0;
    virtual int  speed() const=0;
    virtual char*Smetod() const=0;
    virtual char*tipmat() const=0;

#include <printers.h>
 
class Matrix : public Printers
{
public:
Matrix ();
Matrix (char*marka, char*quality, int speed);
Matrix (const Matrix & r);
~Matrix();
void Print () const;
 
   virtual char*marka() const      //=0;
   virtual char*quality() const;   //=0;
   virtual int  speed() const;     //=0;
   virtual char*Smetod() const;    //=0;
   virtual char*tipmat() const;    //=0;
 
protected:
char *marka_;    // _ добавил, иначе будет коллизия имён
int speed_;
char*quality_;
};

char * Matrix::marka() const {
    return  marka_;
}
 
char * Matrix::quality() const {
    return quality_;
}
 
int  Matrix::speed() const {
    return speed_;
}
 
char * Matrix::Smetod() const {
    return "no Smethod";   // вообще так нельзя, но ладно)
}
 
char * Matrix::tipmat() const {
    return "no tipmat";
}

#include <iostream>
#include <string.h>
#include "printers.h"
#include "Matrix.h"
#include "Str.h"
#include "Laz.h"
using namespace std;
 
int main()
{
 
Matrix mx ("Seiko", "low", 40);
mx.Print ();
Str sr ("BJ-80", "medium", 60, "Termo");
sr.Print ();
Matrix *p = &sr;
p->Print();
Laz lz ("LaserJet", "high", 72, "Piezoelectric", "Suvenir");
lz.Print ();
Str*pp= &lz;
pp->Print();
return 0;
 
}