lst-0551-book.cpp
// https://godbolt.org/z/MjcvochqP
// Dateiname: meine-makros.hpp
#ifndef MEINE_MAKROS_HPP // Include Guard
#define MEINE_MAKROS_HPP
#include <iostream> // cout, cerr
#include <vector>
#ifdef AUSGABE_AUF_STANDARD
# define OUT std::cout
#else
# define OUT std::cerr
#endif
#define MESSAGE(text) { (OUT) << text << "\n"; }
using container_type = std::vector<int>;
static constexpr unsigned SIZE = 10;
#endif