A.0個(gè) B.0個(gè)或1個(gè) C.0個(gè)或多個(gè) D.1個(gè)或多個(gè)
A.iostream.h B.fstream.h C.iomanip.h D.stdlib.h
A.inta,&ra=a,&&ref=ra B.int&refa[10] C.inta,&ra=a,&*refp=&ra D.int*pi,*&pref=pi