#include <memory>
#include <iostream>

struct Foo
{
    int* arr;
    size_t size;

    Foo(int* arr, size_t size) :
        arr(arr), size(size)
    {
    }

    Foo(Foo const& other) :
        arr(new int[other.size]),
        size(other.size)
    {
        std::copy(other.arr, other.arr + size, arr);
        std::cout << "I'm copy constructor!\n";
    }

    ~Foo()
    {
        delete[] arr;
        std::cout << "I'm destructor!\n";
    }

    void Print()
    {
        std::cout << "\n";
        for (size_t i = 0; i < size; i++)
            std::cout << arr[i] << " ";
    }
};

Foo bar()
{
    Foo res(new int[150], 150);
    for (size_t i = 0; i < 150; i++)
        res.arr[i] = rand() % 15;

    return res;
}

int main()
{
    Foo x = bar();
    x.Print();
    std::cin.ignore();
}