Класс Poll и класс Variant (тема инкапсуляция) C++

#include <iostream>
#include <string>
#include <iomanip>
#include <conio.h>
using namespace std;
class Variant {
public:
Variant() : text_("-"), count_(0U) {}
Variant(const string& text, const size_t count) : text_(text), count_(count) {}
void text(string& value) { text_ = value; }
void count(size_t value) { count_ = value; }
string text()const { return text_; }
size_t count()const { return count_; }
private:
string text_;
size_t count_;
friend ostream& operator<<(ostream& out, const Variant& var) {
out << var.text_ << ": " << var.count_;
return out;
}
};
class Poll {
public:
Poll(const string& title, const size_t size) : title_(title), size_(size), pvar_(new Variant[size_]),pos_(0U), type_(true) {}
Poll(const Poll& poll) {
title_ = poll.title_;
size_ = poll.size_;
type_ = poll.type_;
pvar_ = new Variant[size_];
for (auto i = 0U; i < size_; ++i) pvar_[i] = poll.pvar_[i];
}
Poll& operator=(const Poll& poll) {
if (&poll != this) {
title_ = poll.title_;
size_ = poll.size_;
type_ = poll.type_;
pvar_ = new Variant[size_];
for (auto i = 0U; i < size_; ++i) pvar_[i] = poll.pvar_[i];
}
return *this;
}
~Poll() {
if (pvar_) {
delete[] pvar_;
pvar_ = nullptr;
}
}
bool add(const Variant& var) {
if (pos_ < size_) {
pvar_[pos_] = var;
++pos_;
}
return pos_ < size_;
}
void show_count() {
type_ = true;
cout << *this;
}
void show_percent() {
type_ = false;
cout << *this;
}
private:
string title_;
size_t size_;
Variant* pvar_;
size_t pos_;
bool type_;
double sum_()const {
auto s = 0U;
if (pvar_) for (auto i = 0U; i < size_; ++i) s += pvar_[i].count();
return s;
}
friend ostream& operator<<(ostream& out, const Poll& poll) {
out << "\t" << poll.title_ << ":\n";
if (poll.type_) for (auto i = 0U; i < poll.size_; ++i) cout << poll.pvar_[i] << '\n';
else {
auto sum = poll.sum_();
for (auto i = 0U; i < poll.size_; ++i) {
auto per = poll.pvar_[i].count() / sum * 100;
out << poll.pvar_[i].text() << ": " << fixed << setprecision(2) << per << "%\n";
}
}
return out;
}
};
int main() {
system("chcp 1251 > nul");
cout << "Название списка: ";
string title;
getline(cin, title);
cout << "Размер списка: ";
size_t size;
cin >> size;
cin.ignore(numeric_limits<streamsize>::max(), '\n');
Poll box(title, size);
Variant var;
do {
cout << "Текст: ";
string text;
getline(cin, text);
var.text(text);
cout << "Количество: ";
size_t count;
cin >> count;
var.count(count);
cin.ignore(numeric_limits<streamsize>::max(), '\n');
} while (box.add(var));
cout << "Для количественного вывода нажмите 1\nДля процентного вывода нажмите 2 ";
auto choice = _getch();
cout.put('\n');
if (choice == '1') box.show_count();
else if (choice == '2') box.show_percent();
else puts("Ошибка выбора!");
system("pause > nul");
}