typedef struct BOOK_   // ok !
{
    char    *autor;
    char    *bname;
    char    *publisher;
    int     year;
    int     pagenum;
    int     price;
    enum    { BELETRIA, ODBORNA, DETI } cat;
    enum    { POEZIA, ELEKTRONIKA,EKONOMIA,POCITACE } subcat;
    char    *keywords[10];
    char    *anotation;
}BOOK;