Initialization

initialization.cpp

#include <iostream>


class Foo {

public:
  
  Foo() {
    std::cout << this->getValue();    
  }
  
  virtual int getValue() = 0;
};


class Bar: public Foo {

public:
  
  Bar(int value): n(value) { }
  
  int getValue() {
    return this->n;
  }

private:

  int n;
};


int main() {
  Bar bar(42);  // What is the output of this line?
}