Write the definition of all functions included in the given header UnSortedLinkedList.h in a file called UnSortedLinkedList.cpp. Then, write testUnSortedLinkedList.cpp to test that all these functions are working properly.

#include "nodeType.h"

class UnSortedLinkedList{

public:

UnSortedLinkedList(); // constructor

~UnSortedLinkedList(); // destructor

bool isEmpty() const;

void makeEmpty();

void insertBeginning(int item);

int findNode(int item);

void deleteNode(int item);

int getLength() const;

void displayList();

private:

int length;

nodeType* head;

};