Не работает виртуальная функция

#include <iostream>
#include <fstream>
#include <string>
#include <Windows.h>
 
using namespace std;
void AddClearStr(int numOfStr)
{
    for (int i = 0; i < numOfStr; ++i) {
        cout<<" "<< endl;
    }
}
 
int main(int argc,char** argv)
{
    int page = 1;
    for (int i = 1; i < argc; ++i)
    {
        ifstream fin(argv[i]);
        cout << argv[i] << " page: " << page << endl;
        string str;
        int index = 0;
        while (getline(fin,str))
        {
            if(index == 10)
            {
                cout<< "page: " <<++page<< endl;
                index = 0;
 
            }
            cout << str << endl;
            index++;
        }
        if(index != 0)
        {
            AddClearStr(10 - index);
        }
        page++;
    }
    getchar();
}

#include <iostream>
#include "Challenge.h"
 
using namespace std;
using namespace challenge;
 
static list<Challenge> list1;
string Challenge::GetName() {return _name;}
int Challenge::GetScore() {return  _score;}
void Challenge::SetName(string name) {_name = name;}
void Challenge::SetScore(int score) {_score = score;}
void Challenge::Print() {cout<< "Name: " << this->GetName() << ", Score: " << this->GetScore() << endl;}
void Challenge::Show() {
    for(auto challenge : list1)
    {
        challenge.Print();
    }
}
Challenge::Challenge(){
    _name = "default";
    _score = -1;
}
Challenge::Challenge(string name, int score) {
    _name = name;
    _score = score;
}
void Challenge::Add() {list1.push_back(*this);}

#include "iostream"
#include "Test.h"
 
using namespace std;
using namespace test;
 
Test::Test(string name,int score, int numOfQuest):Challenge(name,score) {_numOfQuest = numOfQuest;}
Test::Test():Challenge() {_numOfQuest = -1;}
void Test::Print() {cout<< "Name: " << this->GetName() << ", Score: " << this->GetScore() <<", Num of quest: " << this->GetQuest() <<endl;}
int Test::GetQuest() {return _numOfQuest;}
void Test::SetQuest(int numOfQuest) {_numOfQuest = numOfQuest;}