Can destructors not be initialized?

Question

If destructors can't be initialized, then what is the essence of ~CLASS ?

Answer 1

Destructor gets called automatically when program ends or '}' closing bracket is encounter.
Hence, there is no need for calling Destructor.

Working :

Destructor is a special member function whose task is to destroy the object created by constructor.

Answer 2

A destructor will be executed when a object gets deleted