Linked List Sample in C++

LinkedList.cpp

#include <iostream>
#include <string>
using namespace std;

class Employee
{
private:
	friend class EmployeeList;
	string name;
	int age;
	int yearOfWork;
	Employee *next;
public:
	Employee(const string &, int, int);
	void print() const;
	const string& getName() const { return name; }
	~Employee() { cout << "Destructor of Employee" << endl; }
};

Employee::Employee(const string &newName, int a, int workYear)
{
	name = newName;
	age = a;
	yearOfWork = workYear;
	next = 0;
}

void Employee::print() const
{
	cout << "Name: " << name << ", Age: " << age << ", Year Of Work: " << yearOfWork << endl;
}

class EmployeeList
{
private:
	Employee *head;
public:
	EmployeeList() {	head = 0; };
	bool append(const string &, int, int);
	bool del(const string &);
	void print() const;
	~EmployeeList();
};

bool EmployeeList::append(const string &n, int a, int workYear)
{
	Employee *previous, *current, *newEmployee;
	newEmployee = new Employee(n, a, workYear);
	if (!newEmployee)
		return false;
	
	if (head)
	{
		previous = head;
		current = head->next;
		while (current)
		{
			previous = current;
			current = current->next;
		}
		previous->next = newEmployee;
	} else {
		head = newEmployee;
	}

	return true;
}

bool EmployeeList::del(const string &n)
{
	Employee *previous, *current;
	if (head)
	{
		if (n == head->getName())
		{
			previous = head;
			head = head->next;
			delete previous;
			return true;
		}
		previous = head;
		current = head->next;
		while ( current && ( n != current->getName() ) )
		{
			previous = current;
			current = current->next;
		}
		if (current == 0)
			return false;

		previous->next = current->next;
		delete current;
		return true;
	}
	else {
		return false;
	}
}

void EmployeeList::print() const
{
	Employee *tempPtr;
	if (head)
	{
		tempPtr = head;
		while (tempPtr)
		{
			tempPtr->print();
			tempPtr = tempPtr->next;
		}
	}
	else {
		cout << "The list is empty" << endl;
	}
}

EmployeeList::~EmployeeList()
{
	Employee *temp;
	while (head)
	{
		temp = head;
		head = head->next;
		delete temp;
	}
}

int main()
{
	EmployeeList list;

	list.print();
	list.append("Employee 1", 25, 1);
	list.append("Employee 2", 32, 4);
	list.append("Employee 3", 31, 5);
	list.print();

	if (!list.del("Employee 6"))
		cout << "Employee x not found" << endl;

	if (!list.del("Employee 2"))
		cout << "Employee 2 not found" << endl;

	list.print();

	return 0;
}