1. Complete the ZooAnimal constructor function. It should insert the new ZooAnimal class object in the linked list at the end after the object currently pointed to by the static data member current. Make the nextAnml pointer of the current object point to the object being constructed. Be sure to update the pointer current. class ZooAnimal { private: char *name; ZooAnimal* prevAnml; // previous link in the list ZooAnimal* nextAnml; // next link in the list public: static ZooAnimal *start; // first element of linked list static ZooAnimal *current; // last element of linked list public: ZooAnimal (char*); // constructor function ~ZooAnimal (); // destructor function char* reptName () { return name; } ZooAnimal* prevAnimal (); }; ZooAnimal* ZooAnimal::start = NULL; ZooAnimal* ZooAnimal::current = NULL; ZooAnimal::ZooAnimal (char* theName) { char *name = new char[20]; strcpy(name, theName); } 2. The destructor function is called to destroy the last item in the linked list. The pointer to the object being destroyed is the this pointer. The destructor function updates the static data member current. Write the destructor function. Make current the same as the prevAnml pointer of the object being destroyed. class ZooAnimal { private: char *name; ZooAnimal* prevAnml; // previous link in the list ZooAnimal* nextAnml; // next link in the list public: static ZooAnimal *start; // first element of linked list static ZooAnimal *current; // last element of linked list public: ZooAnimal (char*); // constructor function ~ZooAnimal (); // destructor function char* reptName () { return name; } ZooAnimal* prevAnimal (); }; ZooAnimal* ZooAnimal::start = NULL; ZooAnimal* ZooAnimal::current = NULL; 3. Modify the cout statement below so that it invokes the ZooAnimal member function reptName to report the name of the creature object denoted by subscript whichOne. class ZooAnimal { private: char *name; int cageNumber; int weightDate; int weight; public: ZooAnimal (char*, int, int, int); // constructor function ~ZooAnimal (); // destructor function void changeWeight (int pounds); char* reptName (); int reptWeight (); int daysSinceLastWeighed (int today); }; // ========== an application to use the ZooAnimal class void main () { ZooAnimal creature [200]; int whichOne = 173; cout << "This animal's name is " << ________________________ << endl; }