Answer to Question #242480 in C++ for rumia

Question

Explain the working of the following code perform rough work .

    myList *head,*cur,*previous=NULL;

    for(int i=0;i<4;i++)

        head=new myList;

        head->data=0;

        head->next=previous;

        for(cur=previous;cur!=NULL;cur=cur->next)

            head->data+=1+2*cur->data;

        previous=head;

    while(previous!=NULL)

        cout<<previous->data<<endl;

        cur=previous;

        previous=previous->next;

        delete cur;

  

Answer 1

myList *head,*cur,*previous=NULL;
//loop through i while i is less than four
    for(int i=0;i<4;i++)


        head=new myList;


        head->data=0;


        head->next=previous;


        for(cur=previous;cur!=NULL;cur=cur->next)


            head->data+=1+2*cur->data;


        previous=head;
//loop through while previous is not equal to null
    while(previous!=NULL)


        cout<<previous->data<<endl;


        cur=previous;


        previous=previous->next;
//delete current
        delete cur;