#include <iostream>

 #include <string>

 #include <array>

 using namespace std;

 class Object{

 public:

     virtual void ToString(){

         cout<<"Object"<<endl;

     }

 public:

     virtual int GetPtrLength(){

         return sizeof(this);

     }

 };

 class Test : public Object{

 public:

     void ToString(){

         cout<<"Test"<<endl;

     }

 };

 class Ptr{

 public:

     char Bytes[];

 };

 class Int32{

 public:

     int m_Value;

 public:

     int GetPtrLength(){

         return sizeof(Int32);

     }

 };

 template <class T>

 class List{

 public:

     List() {         m_Count=;         m_Array = new char*[];     }

     ~List(){         if(m_Array!=NULL) {  delete[] m_Array;  cout<< "释放数组指针"<<endl; }

     }

 private:

     int m_Count;

     char** m_Array;

 public:

     void Add(T* item){

         ((Object**)m_Array)[m_Count]=(Object*)item;

         m_Count++;

     }

     Object* operator[](int i)

     {

         if(i >= m_Count)

             throw "索引超过最大值";

         return ((Object**)m_Array)[i];

     }

 };

 int main(){

     try{

         ////初始化一个 指针数组

         //Object** aaaa =NULL;

         //aaaa = new Object*[1000];

         //aaaa[0]=new Object();

         //cout<< sizeof(Ptr)<<endl;

         //cout<<*(new int(1000000))<<endl;

         //char bytes[20];

         //int* v0 = (bytes[0]);

         //bytes[0] = *(new int(1000000));

         //bytes[4] = *(new int(2000000));

         //for(int i=0;i<20;i++)

         //    cout<< bytes[i];

         //cout<<endl;

         //cin.get();

         //return  0;

         List<Object> list;

         list.Add(new Object());

         list.Add(new Test());

         auto ptr = list[];

         ptr->ToString();   //Test

         //delete list;

         List<int> list2;

         list2.Add(new int());

         list2.Add(new int());

         auto ptr2 = list2[];

         ptr2->ToString();  //崩溃

     }catch(char* str){

         cout<< str << endl;

     }catch(...){

         cout<<"未知异常"<<endl;

     }

     cin.get();

     return ;

 }

 Test

 程序崩溃