详解C++的sizeof运算符

基础

http://www.cnblogs.com/lidabo/archive/2012/08/27/2658519.html

类

http://blog.youkuaiyun.com/mishifangxiangdefeng/article/details/7859071

字节对齐

http://blog.youkuaiyun.com/21aspnet/article/details/6729724