In C ++, what is the difference between Class A and Class * A = new class?

In C ++, what is the difference between Class A and Class * A = new class?

 

In C ++
Class;
A. Run ();
And
Class A = new class ();
A. Run ();
Are there any differences between the two?

 

Yes

What is the difference?

Class A = new class (); Error

Class * A = new class ();
A-> Run ();

Oh

* A is a class pointer, right?

Why does Class A not use new?

New is the pointer.

Class A is an object and its type does not match.

Oh

That is to say, Class A implements a memory allocation, right? It creates a new object.

Class * A is blank before new

Yes