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Computer Data Manipulation With Dplyr Difficulty: Medium

The following function reverse() is supposed to reverse a singly linked list. There is one line missing at the end of the function. /* Link list node */ struct node { int data; struct node* next; }; /* head_ref is a double pointer which points to head (or start) pointer of linked list */ static void reverse(struct node** head_ref) { struct node* prev = NULL; struct node* current = *head_ref; struct node* next; while (current != NULL) { next = current->next; current->next = prev; prev = current; current = next; } /*ADD A STATEMENT HERE*/ } What should be added in place of "/*ADD A STATEMENT HERE*/", so that the function correctly reverses a linked list. What does the 'strncpy()' function do in C++? You telnet to a router and make your necessary changes; now you want to end the Telnet session. What command do you type in? What is the highest index for an array with 10 elements in C? What is the worst case time complexity of strand sort?