Does in class member initialization takes place at compile time or run-time?

Question

In C++11 a new feature was introduced where the programmer can initialize class member variables inside class\'s definition, see code below:

struct foo
{ 
  int         


        

Answer 1

Having int size = 3; is exactly equivalent to having int size; and then each constructor that doesn't already have size in its initializer list (including compiler-generated constructors) having size(3) there.

Strictly speaking C++ doesn't have a distinction between "compile-time" and "run-time".