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stack.cpp
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stack.cpp
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#include "stack.h"
#include <stdlib.h>
template<typename T>
Stack<T>::Stack()
{
m_head = NULL;
}
template<typename T>
Stack<T>::~Stack()
{
Node *tmp;
while (m_head)
{
tmp = m_head;
m_head = m_head->next;
delete tmp;
}
}
template<typename T>
void Stack<T>::push(T data)
{
// add data to beginning
Node *newNode = new Node;
newNode->data = data;
newNode->next = m_head;
m_head = newNode;
}
template<typename T>
T Stack<T>::pop()
{
// remove first
if (m_head == NULL)
{
return NULL;
}
Node *tmp = m_head;
T data = m_head->data;
m_head = m_head->next;
delete tmp;
return data;
}
template<typename T>
bool Stack<T>::empty()
{
return m_head == NULL;
}
template class Stack<int>;