void main_source(struct _twoints * &data);void main(){struct _twoints * data;data=NULL;main_source(data);}void main_source(struct _twoints * &data){data=new struct _twoints;data->a=0;data->b=0;printStructLine((twoints *)data);}
static void main(){struct _twoints * data;data=NULL;main_source(data);}void main_source(struct _twoints * &data){struct _twoints data_good;data=&data_good;data->a=0;data->b=0;printStructLine((twoints *)data);}