When no copy constructor is defined, the compiler supplies its own copy comstructor.

Question

Copy constructor query

Answer 1

this explained rather well here:

https://www.hackerearth.com/practice/notes/deep-copy-and-shallow-copy/

Answer 2

that is correct
but take into consideration that the copy constructor only performs shallow copy of variables, meaning that if you use pointers or references to another objects, you will get 2 objects which points to the same addresses.

and ince one object is deleted, if the references are properly cleaned, the other object will point to garbage values and you don't want that

tl/dr: implement your own copy constructors

Answer 3

yes it is useful as it allows you
to do certain things which
would require a constr

but better define your own

Answer 4

Thanks

Answer 5

Can u please give a code related to it so that i can understand it clearly sir..