#include "sys.h" // See § 2 #include "debug.h" // See § 5.2 int main(void) { // Start with everything turned on: Debug( libcw_do.on() ); ForAllDebugChannels( if (!debugChannel.is_on()) debugChannel.on() ); Dout(dc::elephant|dc::owl, "The elephant is called Dumbo, the owl is called Einstein."); return 0; }