cppMarksStorage

#include <iostream>

class MarksStorage
{
    const size_t size;
    int* storage;
    static size_t count;
public:
    static const int maxMark{ 12 };
    static const int minMark{ 1 };

    MarksStorage(size_t sizeP) : size{ sizeP }, storage{ new int[sizeP] {} } {std::cout << "Acquire memory for marks!\n"; ++count; }
    MarksStorage() : MarksStorage(1) {}

    bool setMark(size_t id, int mark)
    {
        if (id < 0 or id > size - 1 or mark < MarksStorage::minMark or mark > MarksStorage::maxMark) { return false; }
        storage[id] = mark;
        return true;
    }

    int getMark(size_t id)
    {
        if (id < 0 or id > size - 1) { return 0; }
        return storage[id];
    }

    static int getCount() { return count; }

    void print()
    {
        // ++size; // ERROR!!
        std::cout << "Marks: ";
        for (int i{ 0 }; i < size; ++i)
        {
            std::cout << storage[i] << ' ';
        }
        std::cout << '\n';
    }

    ~MarksStorage() { delete[] storage; std::cout << "Release memory from marks!\n"; --count; }
};

size_t MarksStorage::count{ 0 };

int main()
{
    std::cout << "MarksStorage count = " << MarksStorage::getCount() << '\n';

    {
        MarksStorage ms1{ 4 };

        ms1.setMark(0, 11);
        ms1.setMark(1, 7);
        ms1.setMark(2, 9);
        ms1.setMark(3, 10);

        ms1.print();

        std::cout << "ms1 count = " << ms1.getCount() << '\n';
        std::cout << "MarksStorage count = " << MarksStorage::getCount() << '\n';

        MarksStorage ms4{ 10 };
        std::cout << "MarksStorage count = " << MarksStorage::getCount() << '\n';
    }
    std::cout << "MarksStorage count = " << MarksStorage::getCount() << '\n';

    MarksStorage ms2;
    ms2.setMark(4, 11);
    ms2.print();
    ms2.setMark(0, 15);
    ms2.print();
    ms2.setMark(0, 9);
    ms2.print();

    std::cout << "ms2 count = " << ms2.getCount() << '\n';
    std::cout << "MarksStorage count = " << MarksStorage::getCount() << '\n';
    return 0;
}