struct element

{
int data;
element* next;
};

class LinkedList
{
private:
element* first;
public:
LinkedList()
{
first = NULL;
}
void additem(int d);
void showitem();
void deleteitem();
void sum();
};

void LinkedList::additem(int d)
{
element* newfirst = new element;
newfirst->data = d;
newfirst->next = first;
first = newfirst;
}

void LinkedList::showitem()
{
element* current = first;
while (current)
{
cout « current->data « endl;
current = current->next;
}

}



void LinkedList::sum()
{
element *current = first;
int sum = 0;
while(current)
{
sum += current->data;
current = current->next;
}
cout « "sum " « sum;
}

int main()
{
LinkedList li;
li.additem(3);
li.additem(5);
li.additem(17);
li.showitem();
li.sum();
_getch();
return 0;
}