what is the use of constructor and destructors in a class ?

Question

Even if we dont use destructors and constructors ,how will it effect the code ? what is gthe benefit of using constructors and destructors?please explain both briefly

Answer 1

Even if you dont define your own the compiler will still create them as defaults.

Constructor is for doing the stuff you put in it when the object is first created.

Destructor does the opposite, it gets called when the object is deleted or it goes out of scope. It will also execute the code you put in it.

Answer 2

To deallocate the whole class and any resources it is using. You normally define your own if you need to execute some code that cleans up stuff, like deleting dynamic arrays that you allocated

Answer 3

Constructor runs when an object is created whereas runs when an when it was deleted.

Answer 4

i am confused about destructors. If my object goes out of scope ,whats the role of destructor even if i dont declare it