Can I use memcpy in C++ to copy classes that have no pointers or virtual functions

Question

Say I have a class, something like the following;

class MyClass
{
public:
  MyClass();
  int a,b,c;
  double x,y,z;
};

#define  PageSize 1000000

MyClass Ar         


        

Answer 1

It will work, because a (POD-) class is the same as a struct (not completely, default access ...), in C++. And you may copy a POD struct with memcpy.

The definition of POD was no virtual functions, no constructor, deconstructor no virtual inheritance ... etc.