наследование

#include <iostream>
#include <cmath>
#include <string>

using namespace std;

class Edition
{
protected:
    string name, fam;
public:
    string getName() {
        return name;
    }
    string getFam() {
        return fam;
    }
    void setName(string name) {
        this->name = name;
    }
    void setFam(string fam) {
        this->fam = fam;
    }
    virtual void info() {
        cout <<"Name:" << name << "Author:" << " " << fam;
    }

};

class Book : public Edition
{
private:
    string izdat;
    int year;
public:
    Book(string name, string fam, string izdat, int year) {
        setName(name);
        setFam(fam);
        setIzdat(izdat);
        setYear(year);
    }
    void setIzdat(string izdat) {
        this->izdat = izdat;
    }
    void setYear(int year) {
        this->year = year;
    }

    void info() {
        cout << "Name:" << getName() << " " << "Author:" << getFam() << " " << "Publishing:" << izdat << " " << "Year of publishing:" << year << endl;
    }
};

class Article : public Edition
{
private:
    string magazine;
    int num, year;
public:
    Article(string name, string fam, string magazine, int num, int year) {
        setName(name);
        setFam(fam);
        setmagazine(magazine);
        setnum(num);
        setyear(year);
    }
    void setmagazine(string magazine) {
        this->magazine = magazine;
    }
    void setnum(int num) {
        this->num = num;
    }
    void setyear(int year) {
        this->year = year;
    }

    void info() {
        cout << "Name:" << getName() << " " << "Author:" << getFam() << " " << "Magazine:" << magazine << " " << "Numeric of Magazine:" << num << " " << "Year of publishing:" << year << endl;
    }

};

class OnlineResource : public Edition
{
private:
    string link, annotation;
public:
    OnlineResource(string name, string fam, string link, string annotation) {
        setName(name);
        setFam(fam);
        setlink(link);
        setannotation(annotation);
    }

    void setlink(string link) {
        this->link = link;
    }

    void setannotation(string annotation) {
        this->annotation = annotation;
    }

    void info() {
        cout << "Name:" << getName() << " " << "Author:" << getFam() << " " << "Link:" << link << " " << "Annotation:" << annotation << endl;
    }

};

void find_fam(Edition** a, string fam, int n) {
    for (int i = 0; i < n; i++) {
        if (a[i]->getFam() == fam) {
            a[i]->info();
            cout << endl;
        }
    }
}

int main() {
    int n = 12;
    Edition** base = new Edition * [n];
    base[0] = new Book("Harry Potter and the Sorcerer's Stone", "Rowling", "Scholastic", 2012);
    base[1] = new Book("Hunger Games", "Collins", "Mavink", 2013);
    base[2] = new Book("Play to live: War", "DmitriRus", "eksmo", 2019);
    base[3] = new Book("The Witcher: the last wish", "Sapkowski", "mavink", 2020);
    base[4] = new Article("Harry Potter and the Half-Blood Prince", "Rowling", "Good Reading", 32, 2014);
    base[5] = new Article("Hunger Games: Cathing Fire", "Collins", "Good Reading", 14, 2012);
    base[6] = new Article("Play to live: breakdown", "DmitriRus", "Good Reading", 55, 2017);
    base[7] = new Article("The Witcher: sword of destiny", "Sapkowski", "Good Reading", 23, 2015);
    base[8] = new OnlineResource("Harry Potter and the Chamber of Secrets", "Rowling", "www.potter.com", "fantastic");
    base[9] = new OnlineResource("Hunger Games: Mockingjay", "Collins", "www.hungergames.com", "thriller");
    base[10] = new OnlineResource("Play to live: clan", "DmitriRus", "www.playtolive.com", "litrpg");
    base[11] = new OnlineResource("The Witcher: baptism of fire", "Sapkowski", "www.thewitcher.com", "fantastic");

    for (int i = 0; i < n; i++) {
        base[i]->info();
        cout << endl;
    }
    string fami;
    cin >> fami;
    find_fam(base, fami, n);
    return 0;
}