Untitled

#include <cstdio> 
#include <list>
using namespace std;  

int main() 
{
	list<int> m_List;
	m_List.push_back(10);
	m_List.push_back(20);

	//travel list
	list<int>::iterator i = m_List.begin();
	for (i = m_List.begin(); i != m_List.end(); i++)
	{
		printf("%d\n", *i);
	}
	return 0; 
}


class Element
{
    int ID;
public:
    Element(int id) 
    {
        printf("Created %d at 0x%x\n", id, this); 
        ID = id;
    }
    ~Element() 
    {
        printf("Destroy %d at 0x%x\n", ID, this);
    }
};
int main() 
{
    Element e1(0), e2(1);
    list<Element> m_List;
    //add to list
    m_List.push_back(e1); m_List.push_back(e2);
    //clear list
    printf("-----Before clear-----\n");
    m_List.clear();
    printf("-----After clear-----\n");
    return 0; 
}


class Element {
    int ID;
public:
    Element(int id) 
    {
        printf("Created %d at 0x%x\n", id, this); 
        ID = id;
    }
    ~Element() 
    {
        printf("Destroy %d at 0x%x\n", ID, this);
    }
};
int main() {
    list<Element*> m_List;
    Element *e0 = new Element(0);
    Element *e1 = new Element(1);
    //add to list
    m_List.push_back(e0); m_List.push_back(e1);
    //clear list
    printf("-----Before clear-----\n");
    m_List.clear();
    printf("-----After clear-----\n");
    return 0; 
}


int main() 
{
    list<Element*> m_List;
    Element *e0 = new Element(0); 
    Element *e1 = new Element(1);
    //add to list
    m_List.push_back(e0); 
    m_List.push_back(e1);
    //clear list
    printf("-----Before clear-----\n");
    list <Element*>::iterator i;
    for (i = m_List.begin(); i != m_List.end(); i++)
    {
        delete *i;
    }
    m_List.clear();
    printf("-----After clear-----\n");
    return 0; 
}