Спринт 7. Копирование объектов. Часть первая.

#include <cassert>
#include <iostream>
#include <string>
#include <vector>

using namespace std;

class Tentacle {
public:
    explicit Tentacle(int id)
        : id_(id)
    {
    }

    int GetId() const {
        return id_;
    }

private:
    int id_ = 0;
};

class Octopus {
public:
    Octopus() {
        Tentacle* t = nullptr;
        try {
            for (int i = 1; i <= 8; ++i) {
                t = new Tentacle(i);
                tentacles_.push_back(t);

                t = nullptr;
            }
        } catch (const bad_alloc&) {
            Cleanup();
            delete t;
            throw;
        }
    }

    const Tentacle& GetTentacle(int index) const {
        if (index < 0 || static_cast<size_t>(index) >= tentacles_.size()) {
            throw out_of_range("Invalid tentacle index"s);
        }
        return *tentacles_[index];
    }

    ~Octopus() {
        Cleanup();
    }

private:
    void Cleanup() {
        for (Tentacle* t : tentacles_) {
            delete t;
        }
        tentacles_.clear();
    }

    vector<Tentacle*> tentacles_;
};

int main(){
    {
        Octopus oc1;
        Octopus oc22 = oc1;
        cout << "Tentacle id = "s << oc22.GetTentacle(5).GetId() << endl;
        Octopus oc333 = oc1;
        cout << "Tentacle id = "s << oc333.GetTentacle(5).GetId() << endl;
        Octopus oc4444 = oc1;
        cout << "Tentacle id = "s << oc4444.GetTentacle(5).GetId() << endl;
    }
    cout << "OK"s << endl;
}