http://www.cnblogs.com/zhyg6516/archive/2011/03/07/1971898.html
http://www.cnblogs.com/jerry19880126/archive/2012/08/14/2638192.html
reinterpret_cast// refer to instruction below.
http://www.cnblogs.com/ider/archive/2011/07/30/cpp_cast_operator_part3.html
原文：http://www.cnblogs.com/gycui/p/4629563.html