判断当前操作系统是32位系统还是64位系统，不是你想的计算一个变量长度就可以的那么简单哦，这个问题是很多人纠结过的-Determine the current operating system is 32-bit systems or 64-bit system, not what you think of a variable length can be calculated as simple Oh, this is a lot of people entangled off