The following method will find the product of all integer values stored in a doubly link list, the insert a new node of this product at the end of the link list. Please fill the spaces. void fun1 (0 node*d,"p,"n; int product= 1; d = head while (d != NULL) { product = product++ p = p-> next p=d; n=new node; n-> data = product v p-> next =n v n->next=NULL;

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