I didnot understand the explaination of destructor

#1

i didnot understand the explaination of destructor

Doubt in delete command?
#2

hi @Aditya-Kushwaha-914550392281281, first thing you need to know is that the destructor of a class object is invoked when the class object goes out of scope or is deleted using delete (if dynamically allocated )
let’s see the code :-

~Node(){
    if(next!=NULL){
        delete next;
    }
}

here this is an example of recursive destructor
so if we have linked list as 1->2 ->3 ->4 ->5 -> NULL
and when we delete 1 then destructor is invoked for 1 and it checks for its next which is present and is the address for 2 thus invoking destructor of 2 similarly we reach 5 and check for its next which is NULL thus is returned to 4 and 5 is deleted and we return to 3 and 4 is deleted and finally we will be left with 1.
try to dry run it yourself
In case of any doubt feel free to ask :slight_smile:
mark your doubt as resolved If you got the answer

#3

node is already a user defined datatype why is the need off node in this we are using a one morre datatype

#4

@Aditya-Kushwaha-914550392281281, can explain in context what you mean