void main(){twointsclass * data;twointsclass * &data_ref=data;data=NULL;data=(twointsclass *)malloc(100*sizeof(twointsclass));{twointsclass * data=data_ref;delete data;}}
static void main(){twointsclass * data;twointsclass * &data_ref=data;data=NULL;data=new twointsclass;{twointsclass * data=data_ref;delete data;}}