Looks pretty algorithmic to me:

  #include "env.hpp"
  #define FLIRTING "not fun"
  #if __has_feature(flirting)
  #error Invalid built-in environment
  #endif

  int main()
  {

   const char insult[] = "up your game";
   Person p;

   if (has_gamed(p) && FLIRTING) {
      p.set_worst();
      throw insult;
   }
  }