A.复合 B.if C.switch D.while
A.*B.#C.&D.@
A.struct BOOK *x=malloc(book); B.struct BOOK x={"C++ Programming",27.0}; C.struct BOOK *x=malloc(sizeof(struct BOOK)); D.struct BOOK *x=&book;
A.句点 B.冒号 C.分号 D.逗号
A.char a[20]=“abcdefg”; B.char a[]=“x+y=55.”; C.char a[15]={“1”,“2”}; D.char a[10]=‟5”;