/** @file list6301.cpp */
/** Listing 63-1. Demonstrating the Order of Initialization of Base Classes */
#include <iostream>
#include <ostream>
#include <string>

class visible {
public:
    visible(std::string const& msg) : msg_(msg) { std::cout << msg << '\n'; }
    std::string const& msg() const { return msg_; }
private:
    std::string msg_;
};

class base1 : public visible {
public:
   base1(int x) : visible("base1 constructed"), value_(x) {}
   int value() const { return value_; }
private:
   int value_;
};

class base2 : public visible {
public:
   base2(std::string const& str) : visible("base2(" + str + ") constructed") {}
};

class base3 : public visible {
public:
   base3() : visible("base3 constructed") {}
   int value() const { return 42; }
};

class derived : public base1, public base2, public base3 {
public:
   derived(int i, std::string const& str) : base3(), base2(str), base1(i) {}
   int value() const { return base1::value() + base3::value(); }
   std::string msg() const
  {
     return base1::msg() + "\n" + base2::msg() + "\n" + base3::msg();
  }
};

int main()
{
   derived d(42, "example");
}