void AddBookData() //class BookData 객체를 생성, 도서를 등록
        {
                string title; //제목
                string author; //작가
                string category; //구분
                int price; //가격
                int y_num;
                int m_num;
                int d_num;
                                
                cout<<"** 도서 정보를 입력하세요 **"<<endl;
                cout<<"제목 : ";
                fflush(stdin);
                cin>>title;
                cout<<"작가 : ";
                fflush(stdin);
                cin>>author;
                cout<<"구분 : ";
                fflush(stdin);
                cin>>category;
                cout<<"가격(원) : ";
                fflush(stdin);
                cin>>price;
                cout<<"입고일 (년, 월 ,일) : ";
                fflush(stdin);
                cin>>y_num>>m_num>>d_num;
                BookList[B_num] = BookData(title, author, category, price, Date(y_num, m_num, d_num)); //class BookData 객체를 생성
                B_num++;
                cout<<endl;
                MainMenu();
        }
이 객체가 생성하는 클래스인 bookdata 는


class BookData//도서 클래스(제목, 작가, 구분, 가격, 등록일)
{
        string title;
        string author;
        string category;
        int price;
        Date initdate;
public:
        BookData(string _title = "notitle", string _author = "unknown", string _category = "non", int _price = 0, Date& _initdate = Date(0, 0, 0))
        {
                title = _title;
                author = _author;
                category = _category;
                price = _price;
                initdate = _initdate;
        }
        void Display()//화면 출력
        {
                cout.setf(ios_base::left, ios_base::adjustfield);
                cout.width(20);
                cout<<title<<" ";
                cout.width(7);
                cout<<author<<" ";
                cout.width(7);
                cout<<category<<" ";
                cout.width(7);
                cout<<price<<" ";
                initdate.DateDisplay();
                cout<<endl;
        }
        void FDisplay()//파일 출력
        {
                fout.setf(ios_base::left, ios_base::adjustfield);
                fout.width(20);
                fout<<title<<" ";
                fout.width(7);
                fout<<author<<" ";
                fout.width(7);
                fout<<category<<" ";
                fout.width(7);
                fout<<price<<" ";
                initdate.FDateDisplay();
                fout<<endl;
        }
        string getTitle(){                return title;                }
        string getAuthor(){                return author;                }
        string getCategory(){        return category;        }
        int getPrice(){                        return price;                }
        void setTitle(string _title){                        title = _title;                        }
        void setAuthor(string _author){                author = _author;                }
        void setCategory(string _category){        category = _category;        }
        void setPrice(int _price){                        price = _price;                        }
};
입니다. 첫번째 객체는 잘 생성되는데 두번째 객체를 생성하려고 하면 걍 쓰레기 값이 자동으로 입력 되는데 뭐가 문제일까요?;;