void main_sink(twointsclass * * data_ptr);void main(){twointsclass * data;data=NULL;data=new twointsclass;main_sink(&data);}void main_sink(twointsclass * * data_ptr){twointsclass * data=*data_ptr;free(data);}
static void main(){twointsclass * data;data=NULL;data=new twointsclass;main_sink(&data);}void main_sink(twointsclass * * data_ptr){twointsclass * data=*data_ptr;delete data;}