Generate a random integer in a range with C++.

random_game_range.cpp

int main(...)
{
  srand(time(NULL));
  while (true) {
    int nmin = 220;
    int nmax = 550;
    int x = nmin + (std::rand() % (nmax - nmin + 1));
    printf("%i\n", x);
  }
  
  return 0;
}