Size of C++ classes

Question

Here is the code which prints size of different classes

#include 

using namespace std;

class EmptyClass
{    
};

class AbstractClass
{
  publi         


        

Answer 1

NotAbstrClass is like an empty class when we talk about bit sizes since it has no data. MixClass has the virtual function pointer (4 bytes on a 32-bit machine) and an int (also 4 bytes).