Destructor is the antonym to Constructor both in name ans meaning.

Constructor is a special method that initializes the data members of the class and thus allocates the memory space to them.

On the other hand, destructor is a member function which destructs or deletes an object.

A destructor is automatically called when:

• the function ends
• the program ends
• a delete operator is used
• a block containing the local variables end

They are usually named with the same name as the class name preceded by a tilde (~).