Test1.cpp

#include <iostream>

class A
{
public:
    A(int n = 0) : m_n(n) { 
        std::cout<<" create " << m_n <<std::endl;
    }
    A(const A &a) : m_n(a.m_n) {  
    ++m_copy_ctor_calls; 
        std::cout << "copy " << m_n << " " << m_copy_ctor_calls << std::endl;
}
    ~A() { 
    ++m_dtor_calls; 
        std::cout << "delete " << m_n << " " << m_dtor_calls  << std::endl;
}

private:
    int m_n;

public:
    static int m_copy_ctor_calls;
    static int m_dtor_calls;
};

int A::m_copy_ctor_calls = 0;
int A::m_dtor_calls = 0;

int main()
{
    A *p = nullptr;
    {
        const A a = 2;
        p = new A[4];
        p[0] = a;
    }
    std::cout << A::m_copy_ctor_calls << A::m_dtor_calls << std::endl;
    p[1] = A(1);
    p[2] = 2;
    p[3] = 6;
    delete [] p;
    std::cout << A::m_copy_ctor_calls << A::m_dtor_calls << std::endl;

    std::cout << "Code Completed" << std::endl;
    return 0;
}