C++ rvalue reference and move semantics

main.cpp

#include <iostream>
#include <vector>

using namespace std;

struct A {
  int * ptr;
  A() {
    cout << "Constructor" << endl;
    ptr = new int;
  }
  A(const A & a1) {
    cout << "Copy Constructor" << endl;
    this->ptr = new int;
  }
  A(A && a1) {
      cout << "Move Constructor" << endl;
      this->ptr = a1.ptr;
      a1.ptr = nullptr;
  }
  ~A() {
    cout << "Destructor" << endl;
    delete ptr;
  }
};

int main(void) {
  vector<A> v1;
  A a1;
  v1.push_back(move(a1));
  cout << "added to array" << endl;
  return 0;
}