FX_DWORD >>4 等于0

#include <iostream>
typedef unsigned int		FX_DWORD;
typedef unsigned long long	FX_UINT64;
typedef unsigned int		FX_UINTPTR;
int main()
{
	FX_DWORD i = ((FX_DWORD)(FX_UINTPTR)1) >> 4;
	std::cout << i << std::endl;
    std::cout << "Hello World!\n"; 
	system("PAUSE");
}