An alternate main for binary_search_tree_driver.cpp

alternate_main.cpp

void printUsage(char call[]) {
    cout << " Usage: " << call << " [--retrograde]" << endl;
}

int main (int argc, char* argv[])
{
  if (argc == 2 && strcmp(argv[1], "--retrograde") == 0) RETROGRADE_MODE = 1;
  else if (argc != 1) {
    printUsage(argv[0]);
    return -1;
  }

  UTFrameworkInit;

}

thanks, i incorporated this to the new version of the driver and will push it later this evening. I really appreciate this kind of stuff.