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

You could. But first ask yourself:

Why not just use the copy-constructor that is provided by your compiler to do a member-wise copy?

Are you having specific performance problems for which you need to optimise?

The current implementation contains all POD-types: what happens when somebody changes it?