代码错误！！！

[levis_caval]

#include<iostream>

using namespace std;

class Item
{
public:
Item(char* name, int age)
{
if (NULL == name)
{
m_name = new char[10];
strcpy(m_name, "未命名");
}
else
{
m_name = new char[strlen(name)+1];
strcpy(m_name, name);
}
m_age = age;
Next = NULL;
}
~Item()
{
if (m_name)
{
delete []m_name;
m_name = NULL;
}
}

void Display()
{
cout << this->m_name <<":"<< this->m_age <<endl;
}

int m_age;
char* m_name;
Item* Next;
};

class list
{
public:
list()
{
m_head = NULL;
m_tail = NULL;
m_len = 0;
}
~list()
{

}

bool IsEmpty()
{
return (m_len == 0);
}

void CreatNode(char* name, int age =0)
{
Item* node = new Item(name, age);

if ((m_head == m_tail) && (m_head == NULL))
{
m_head = node;
m_tail = node;
m_head->Next = NULL;
m_tail->Next = NULL;
m_len = 1;
}
else
{
m_tail->Next = node;
m_tail = m_tail->Next;
m_tail->Next = NULL;
}
}

bool DelNode(int index, int offset=0)
{

return false;
}

Item* Locate(int index, int offset=0)
{
Item* node = NULL;
if (index<0 || index>m_len)
{
return NULL;
}
switch (offset)
{
case 0:
{
node = m_head;
int stedp =0;
while(node)
{
if(index == stedp+1)
{
return node;
}
stedp++;
node = node->Next;

}
if (index != stedp+1)
{
break;
}
return node;
}
break;
case 1:
{

}
break;
}
return NULL;
}



Item* operator[](int index)
{
if(index<0 || index>=m_len)
{
return NULL;
}
else
{
return Locate(index+1);
}
return NULL;
}

void Display()
{
Item* node = m_head;

while(node)
{
cout << node->m_name<<":"
<< node->m_age <<endl;
node = node->Next;
}
}
private:
Item* m_head;
Item* m_tail;
int m_len;
};

int main()
{
list* s = new list;
s->CreatNode("nam", 34);
s->CreatNode("nX", 34);
s->CreatNode("nD", 34);
s->CreatNode("nXXm", 34);

s[2].Display();

delete s;


return 0;
}


运行结果如下：
_8:3672120

我想输出相应的第二项，去输出了这个，想问下这是哪里的问题？还请大家不吝赐教？是否是对象的生命周期的问题！如果是请标出位置

[goodname]

(*s)[2]->Display();
或者
list &sx = *s;
sx[2]->Display();

另外
void CreatNode(char* name, int age =0)
{
Item* node = new Item(name, age);

if ((m_head == m_tail) && (m_head == NULL))
{
m_head = node;
m_tail = node;
m_head->Next = NULL;
m_tail->Next = NULL;
m_len = 1;
}
else
{
m_tail->Next = node;
m_tail = m_tail->Next;
m_tail->Next = NULL;
m_len++;//<----------------------------这里需要+1
}
}

[pengzhixi]

[Quote=引用 2 楼 goodname 的回复:]
(*s)[2]->Display();
或者
list &sx = *s;
sx[2]->Display();

另外
void CreatNode(char* name, int age =0)
{
Item* node = new Item(name, age);

if ((m_head == m_tail) && (m_head == NULL))
{
m_head = node;
m_tail = node;
m_head->Next = NULL;
m_tail->Next = NULL;
m_len = 1;
}
else
{
m_tail->Next = node;
m_tail = m_tail->Next;
m_tail->Next = NULL;
m_len++;// …
[/Quote]
up
另外

Item(char* name, int age) 
{ 
if (NULL == name) 
{ 
m_name = new char[10]; 
strcpy(m_name, "未命名"); 
m_name[9]='\0';//加了这句
} 
else 
{ 
m_name = new char[strlen(name)+1]; 
strcpy(m_name, name); 
m_name[strlen(name)]='\0';//加了这句
} 
m_age = age; 
Next = NULL; 
} 

[leegongbo]

s[2].Display();

s[2] 不存在这样的用法吧。所以打出来的结果乱七八遭

如果要取第二项，使指针从头开始，移动一次就可以取到item，然后打印就行了。