In defining destructor

#1

why while is not used we are iterating till end, and how if recursively able to delete all the nodes

#2

hello @great

this destructor is responsible for recursive deletion.

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

It is said to be recursive in nature because a node is deleted, its destructor gets invoked. As the destructor is invoked, the above code executes and it checks whether the current node has a next node. If the next node exists, it says to delete that next node.
Since the next node is also an instance of this very same class, the same destructor executes for it, this time for the next node. The entire process repeates and will continue to call the destructors for node after node until it reaches a node that does not have next . In that case, the if statement will simply not run and thus we will simply return from there.
Hence this destructor runs in a recursive manner.

#3

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#4

I have one doubt, why destructor is getting invoked everytime we delete the node

#5

its c++ langauge functionality whenerve we delete object the destructor will get called automatically

#6

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