Question

I have this class:

class A {
private:
 int player;
public:
 A(int initPlayer = 0);
 A(const A&);
 A& operator=(const A&);
 ~A();
 void foo() const;
};

and I have function which contains this row:

 A *pa1 = new A(a2);

can somebody please explain what exactly is going on, when I call A(a2) compiler calls copy constructor or constructor, thanks in advance

Answer 1

Assuming a2 is an instance of A, this calls the copy constructor.

It will call operator new to get dynamic memory for the object, then it will copy-construct a new object into the memory, then return a pointer to that memory.