change-the-private-members

代码说明：

  类的私有成员是面向编译器的。对内存而言，一切都是公开的。代码即是使用指针去改变类的私有成员，来说明这个问题。(Private members of the class-oriented compiler. Memory is concerned, everything is open. Code is to use a pointer to change the private members of the class, to illustrate the problem.)