Answer by trojanfoe for Memory leak line

It's not a line of code; it should be 3:

#if defined(DEBUG) | defined (_DEBUG)_CrtSetDbgFlag (_CRTDBG_ALLOC_MEM_OF | CRTDBG_LEAK_CHECK_OF);#endif

EDIT: This question changed several times after I answered it and in its current state the issue is a missing include file:

#include <crtdbg.h>