Stack menggunakan linklist

Contoh program stack ini menggunakan linklist dan data terstruktur

#include <iostream<

using namespace std;

typedef struct Element
{
 void *data;
 struct Element *next;
} Element;

bool push(Element **top, void *data)
{
 Element *elem = new Element;
 if(!elem) return false;

 elem->data = data;
 elem->next = *top;
 *top = elem;
 return true;
}

bool createStack(Element **top)
{
 *top = NULL;
 return true;
}

bool pop(Element **top, void **data )
{
 Element *elem;
 if( !(elem = *top) ) return false;

 *data = elem->data;
 *top = elem->next;
 delete elem;
 return true;
}

bool deleteStack(Element **top)
{
 Element *elem;
 while(*top) {
  elem = (*top)->next;
  delete *top;
  *top = elem;
 }
 return true;

}

void printStack(Element *top) 
{
 if(top==NULL) {
  cout << "Empty!" << endl;
 }
 Element *cur = top;
 while(cur) {
  cout << *(static_cast<int *>(cur->data)) << " ";
  cur = cur->next;
 }
 cout << endl << endl;
}

int main()
{
 Element *head;
 createStack(&head);
 int n1 = 10, n2 = 20, n3 = 30, n4 = 40, n5 = 50;
 push(&head, &n1);
 push(&head, &n2);
 push(&head, &n3);
 push(&head, &n4);
 push(&head, &n5);

 printStack(head);

 void * n;
 pop(&head, &n);
 cout << "popped " << *(static_cast<int*>(n)) << endl;
 pop(&head, &n);
 cout << "popped " << *(static_cast<int*>(n)) << endl;
 cout << endl;

 printStack(head);

 cout << "deleting stack..." << endl;
 deleteStack(&head);
 printStack(head);
}