Consider the following code which deletes all the nodes in a linked list. Which of the following is the missing statement?
A) delete first;
B) delete temp;
C) destroy temp;
D) clear temp;

Question

Consider the following code which deletes all the nodes in a linked list.  Which of the following is the missing statement?
A) delete first; 
B) delete temp; 
C) destroy temp; 
D) clear temp;

Quizplus · Accepted Answer

The code is deleting all the nodes in a linked list by iterating through the linked list with a temporary pointer "temp" and deleting each node. In this scenario, the "delete" keyword is used to free the memory allocated to the node. Therefore, the correct missing statement is "delete temp" to free the memory of the temporary pointer "temp" after the loop is completed. Option A is incorrect because "first" is not a temp pointer and also it doesn't delete all the nodes. Option C ("destroy temp") and Option D ("clear temp") are incorrect as they are not valid keywords in C++ and are not commonly used in linked list algorithms.

Consider the Following Code Which Deletes All the Nodes in a Linked