Рекомендации к коду: двусвязный список

//warning C4345: behavior change: 
//an object of POD type constructed with an initializer of the form () will be default-initialized
auto tmp = new item();

#define _CRTDBG_MAP_ALLOC
 
 
#if defined(_DEBUG) && defined(_CRTDBG_MAP_ALLOC) && defined(__cplusplus) && !defined(_DEBUG_NEW)
 
    #define _DEBUG_NEW new(_NORMAL_BLOCK, __FILE__, __LINE__)
    #define new _DEBUG_NEW
 
    #include <crtdbg.h>
 
#endif
 
 
 
 
#include "List.h"
 
int main()
{
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF|_CRTDBG_LEAK_CHECK_DF|_CRTDBG_CHECK_ALWAYS_DF|_CRTDBG_DELAY_FREE_MEM_DF);
    _CrtSetReportMode(_CRT_WARN  , _CRTDBG_MODE_FILE   );
    _CrtSetReportFile(_CRT_WARN  , _CRTDBG_FILE_STDOUT );
    _CrtSetReportMode(_CRT_ERROR , _CRTDBG_MODE_FILE   );
    _CrtSetReportFile(_CRT_ERROR , _CRTDBG_FILE_STDOUT );
    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE   );
    _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDOUT );
 
 
 
 
    auto a = List();
    a.Add(123);
    a.Add(256);
    a.Add(1234);
    a.GetItem(2);
                                          
    auto tmp = new item();
    tmp->data = 3;
    a.insert(tmp, 2);
    a.View();
    system("PAUSE");
}