c++ - question about smart pointers -

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I have this snippet of code and I have class A (constructor, district, copy constructor, operator =), my question is I need to write Smart Pointers if I want this code to work completely, if not, then you can understand where Smart Pointers will be useful, thanks in advance 

  A * Pa 1 = New A (A2); A const * pa2 = pa1; A const * const pa3 = pa2;

No smart pointer is required, because none of the new tasks are thrown without You just need to: 

  A * Pa 1 = New A (A2); A const * pa2 = pa1; A const * const pa3 = pa2; Remove Pa1;

If you do not want this, please clarify your question.


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