A.BOOK*x=newbook
B.BOOKx={"C++Programming", 27.0}
C.BOOK*x=newBOOK
D.BOOK*x=book
假定有“structBOOK{chartitle[40]floatprice}BOOK*book=newBOOK”,则正确的语句为( )。A.strcpy(book->title,”WangTao”)B.strcpy(book.title,”WangTao”)C.strcpy(*book.title,”WangTao”)D.strcpy((*book)->title,”WangTao”)
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要查询book表中所有书名以“电子商务”开头的书籍作者,可用(61)语句。A.SELECT author FROM booK WHERE book _name=‘电子商务*’B.SELECT author FROM booK WHERE book _name LIKE‘电子商务*’C.SELECT author FROM booK WHERE book_ name=‘电子商务%’D.SELECT author FROM booK WHERE book_name LIKE‘电子商务%’
在XML中,元素book的声明语句如下:<1ELEMENT book(title.price+,author?,borrow*)>该声明语句表明,元素book中子元素______至少出现一次。A.title B.price C.author D.borrow
假定有“struct BOOK{char title[40]; float price;} book;”,则正确的语句为()。Astruct BOOK x= &book;Bstruct BOOK *x=&book;Cstruct BOOK x=calloc(BOOK);Dstruct BOOK *x=BOOK;
假定有“struct BOOK{char title[40]; float price;}; struct BOOK book;”,则不正确的语句为()。Astruct BOOK *x=malloc(book);Bstruct BOOK x={"C++ Programming",27.0};Cstruct BOOK *x=malloc(sizeof(struct BOOK));Dstruct BOOK *x=&book;
下列元素定义中正确的是()。A、<book></Book>B、<BOOK></book>C、<book></book>D、<Book></bOOK>
假定有“structBOOK{chartitle[40];floatprice;};BOOK*book;”定义,则不正确的语句为()。A、BOOK*x=newbookB、BOOKx={“C++Programming”,27.0}C、BOOK*x=newBOOKD、BOOK**x=&book