自然对界，Win32平台下的微软C编译器(cl.exe for 80x86)在默认情况下采用如下的对齐规则:任何基本数据类型T的对齐模数就是T的大小，即sizeof(T)。比如对于double类型(8字节)，-Nature of profession, Win32 platforms under Microsoft C compiler (cl.exe for 80x86) by default alignment using the following rules: any basic data type of the alignment modulus T is the size of T, that is, sizeof (T) . For example, for the double type (8 bytes),