Topic: Singly Linked ListImplement the following functions in C++ program. Read the question carefully. Below are the "CODE THAT NEEDS TO BE IMPROVED" or "NOT FINAL CODE"  (See attached photo for reference)  int add(int num) This will add the element num into the linked list and return the position of the newly-added element. In the above example, having add(60) will return 5 as it is the fifth position in the list. int remove(int num) This will remove the first instance of the element and return the position of the removed element. In the above example, having remove(40) will return 3 as 40 was the third element in the linked list before having removed. int get(int pos) This method will get the element at the specified position. This will return -1 if the specified position is invalid.   int add(int num) {             addTail(num);             return index;         }           int remove(int num) {             node* currnode = head;             node* prevnode = NULL;…

TOPIC: Singly Linked ListImplement the following functions using C++  int add(int num) This will add the element num into the linked list and return the position of the newly-added element. In the above example, having add(60) will return 5 as it is the fifth position in the list. int remove(int num) This will remove the first instance of the element and return the position of the removed element. In the above example, having remove(40) will return 3 as 40 was the third element in the linked list before having removed. int get(int pos) This method will get the element at the specified position. This will return -1 if the specified position is invalid. bool addAt(int num, int pos) This method will add the integer num to the posth position of the list and returns true if the value of pos is valid. Performing addAt(20, 2) in the example list will add 20 at the 2nd position and the linked list will now look like this: 10 -> 20 -> 30 -> 40 -> 50. When the value of pos is…

Topic: Singly Linked ListImplement the following functions in C++ program. Read the question carefully. Below is the "CODE THAT NEEDS TO BE IMPROVED" or "NOT FINAL CODE"  (See attached photo for reference)  bool addAt(int num, int pos) This method will add the integer num to the posth position of the list and returns true if the value of pos is valid. Performing addAt(20, 2) in the example list will add 20 at the 2nd position and the linked list will now look like this: 10 -> 20 -> 30 -> 40 -> 50. When the value of pos is invalid i.e. greater than the size + 1 or less than one, return false.   bool addAt(int num, int pos) {             if (pos == 1) { // case 1: addHead                 addHead(num);                 return true;             }             if (pos == index + 1) { // case 3: addTail                 addTail(num);                 return true;             }             node* currnode = head; //addAt(20, 3)             int count = 0;             while (currnode…