If you have some trouble with const and dest when they called,try it

testingConstDest.cpp

#include <iostream>

using namespace std;

#define POINTER_CREATION
#define REAL_CREATION

 class Aaa{
public:
	Aaa()
	{
	    cout<<"CONSTRUCTOR"<<endl;
    }

	~Aaa()
	{
	    cout<<"DESTRUCTOR"<<endl;
    }
};

int main(void)
{
	cout<<"1"<<endl;
#ifdef REAL_CREATION
    Aaa a;
#endif
#ifdef POINTER_CREATION
	Aaa *b;
#endif
	cout<<"2"<<endl;

	cout<<"3"<<endl;

	return 0;
}