//
# contains "book.h"
# include & ltiostream & gt
# include & ltwindows.h & gt
# include & ltconio.h & gt
# include & ltfstream & gt
Use namespace std
Void gotoxy(int x, int y) // column x: 0~79 rows y: 0~24.
{
HANDLE hConsole = GetStdHandle(STD _ OUTPUT _ HANDLE)；
COORD coordScreen={x，y }；
SetConsoleCursorPosition(hConsole，coord screen)；
Return;
}
Template & lttypename T>
void show_data(int x，int y，T data)
{
gotoxy(x，y)；
Cout & lt& lt data;
}
Template & lttypename T>
Void input_data(int x, int y, char prompt[], T& data)
{
gotoxy(x，y)；
Cout & lt& lt tips;
CIN & gt； & gt data;
}
Int show_main_menu() // Display the main menu and select.
{
char ch
while ( 1)
{
System ("CLS");
show_data(4, 1,"┌────────────────────────────┐”)；
show_data(4，2，“││”)；
Show _ data (4,3, "│ library management │");
show_data(4，4，“││”)；
show_data(4,5,"└────────────────────────────┘”)；
Show _ data (20 20,8, "1- Add book information");
Show _ data (20, 10, "2- modify book information");
Show _ data (20, 12, "3- delete book information");
Show _ data (20, 14, "4- browse book information");
Show _ data (20, 16, "0- exit");
Show_data(20, 18, "Please select");
ch = getche()；
if(ch & gt； = ' 0 ' & amp& ampch & lt='4')
Break;
}
Return to ch-48;
}
int main()
{ int selected = 0；
int n = 0；
BOOK BOOK[MAX _ BOOK]；
Load_data_from_file (book, n);
while ( 1)
{
selected = show _ main _ menu()；
Switch (selected)
{
Case 1: add_book(book, n); Break;
Case 2: update_book(book, n); Break;
Case 3: delete_book(book, n); Break;
Case 4: view_book(book, n); Break;
Case 0: broken;
};
If (selected ==0)
{
Show_data(20, 20, "Exit the library management, thank you! \ n ")；
Break;
}
}
save_data_to_file(book，n)；
Returns 0;
}
Void add_book(Book book[], int & ampN) // Add a new book.
{
Booking bk;
while ( 1)
{
System ("CLS");
Input _ data (4,2, "Book number (ending when entering 0):", bk.book _ no);
if (strcmp("0 "，bk.book_no)==0)
Break;
Input _ data (4,4, "book name:", bk.book _ name);
Input_data(4，6，" Author:"，bk . Author)；
Input _ data (4,8, "Publisher:", bk. publisher);
input_data(4， 10，" ISBN:"，bk。 ISBN)；
Input_data(4, 12, "book price:", bk. price);
Input_data(4, 14, "Total pages:", bk.pages);
char yn
Input_data(4, 16, "Do you want to save (y/n? ): "，yn)；
if ('y'==yn || 'Y'==yn)
{
book[n]= bk；
n++；
}
}
}
Void update_book(Book book[], int & ampN) // Modify books.
{scheduled BP;
int i，j，k，a；
char p；
while ( 1)
{
System ("CLS");
a = 0；
Input _ data (4,2, "Please enter the ISBN to be modified (end when entering 0):", bp.book _ no);
if (strcmp("0 "，bp.book_no)==0)
Break;
for(I = 0； I & ltn；; i++)
{if(strcmp (book [i]). book_no，bp.book_no)==0)
{ BP = book[I]； a = 1； Break; }
}
If (a==0)
{show _ data (4,4, "Book not found"); System ("suspended"); }
other
{
Show _ data (2 2,4, "1- ISBN:");
Show _ data (2 2,6, "2- book name:");
Show _ data (2 2,8, "3- author:");
Show _ data (2， 10，" 4-Press:")；
show_data(2， 12，" 5-ISBN:")；
Show _ data (2, 14, "6 price:");
Show _ data (2, 16, "7- total pages:");
Show _ data (2, 18, "0- modification ends");
show_data( 16，4，BP . book _ no)；
show_data( 16，6，BP . book _ name)；
show_data( 16，8，BP . author)；
show_data( 16， 10，BP . publisher)；
show_data( 16， 12，bp。 ISBN)；
show_data( 16， 14，BP . price)；
show_data( 16， 16，BP . pages)；
for(j = 0； j & lt 15; j++)
{show _ data (2,20, "Please enter serial number before modifying");
p = getche()；
k = p-48；
if(k & gt； = 1。 & ampk & lt=7)
Switch (k)
{case 1 :input_data(38，4，“”，BP . book _ no)； Break;
Case 2: input _ data (38,6, "",bp.book _ name); Break;
Case 3: input _ data (38,8, "",BP. author); Break;
Case 4: input_data(38, 10, "",bp.publisher); Break;
Case 5: input_data(38, 12, "",bp. ISBN)； Break;
Case 6: input_data(38, 14, "",bp.price); Break;
Case 7 :input_data(38, 16, "",bp.pages); Break;
}
}
if(k = = 0)break；
}
char yn
Input _ data (4,22, "Do you want to save (y/n? ): "，yn)；
if(' Y ' = = yn | | ' Y ' = = yn)book[I]= BP；
}
}
}
Void delete_book(Book book[], int & ampN) // Delete books.
{
Book bq;
int i，j；
while ( 1)
{
System ("CLS");
Input _ data (4,2, "Please enter the book number to be deleted (end when entering 0):", bq.book _ no);
if (strcmp("0 "，bq.book_no)==0)
Break;
for(I = 0； I & ltn；; i++)
{if(strcmp (book [i]). book_no，bq . book _ no)= = 0){ j = I； Break; }}
If (i==n)
{show _ data (4,4, "Book not found"); System ("suspended"); }
other
{
Show_data( 1, 4, "ISBN:");
Show_data( 1, 6, "Book name:");
Show_data( 1, 8, "Author:");
Show_data( 1， 10，" Press:")；
show_data( 1， 12，" ISBN:")；
Show_data( 1, 14, "Book price:");
Show_data( 1, 16, "Total pages:");
show_data( 10，4，book[j].book _ no)；
show_data( 10，6，book[j].book _ name)；
Show _ data (10,8, book[j]. Author);
Show_data( 10, 10, book[j]. Publisher);
show_data( 10， 12，book[j].ISBN)；
Show_data( 10, 14, book[j]. price);
Show_data( 10, 16, book[j]. Pages);
char yn
Input_data(4, 18, "Do you want to delete (y/n? ): "，yn)；
if ('y'==yn || 'Y'==yn)
{ for(I = 0； I< = n-j; i++)
book[I+j]= book[I+j+ 1]；
n-； }
}
}
}
Voidview _ book (bookbook [], int n)// Browse all book information.
{
int i，row
System ("CLS");
If (n==0)
{
Show_data( 10, 10, "No book information, quit!" );
System ("suspended");
Return;
}
row = 3；
for(I = 0； I & ltn；; i++)
{
if (row==3)
{ system(" cls ")；
Show_data(0, 1, "book number");
Show_data( 12, 1, "title");
Show _ data(34 1, "author");
Show _ data(56 1, "Publishing House");
show_data(0，2，“-”)；
}
show_data(0，row，book[i].book _ no)；
show_data( 12，row，book[i]。 book _ name)；
Show_data(34, row, book[i]. Author);
Show_data(56, row, book[i]. Publisher);
row++；
if(row & gt； =20 || i==n- 1)
{
Show_data(5, row+ 1, "Press any key to continue");
getche()；
row = 3；
}
}
}
Voidload _ data _ from _ file (book [], int & ampN) // Import data from disk "book.dat".
{ int I；
ifstream infile("book.dat "，IOs::in)；
infile & gt& gtn；
for(I = 0； I & ltn；; i++)
Infile & gt& gt book [me]. Book _ no>& gt book [me]. Book _ name & gt& gt book [me]. Author & gt& gt book [me]. Publisher & gt& gt book [me]. ISBN & gt& gt book [me]. Price & gt& gt book [me]. Number of pages;
infile . close()；
}
Voidsave _ data _ to _ file (bookbook [], int n)// Store the data on the disk "book.dat".
{ int I；
of stream outfile(" book . dat ")；
If (! Output file)
{ cerr & lt& lt" open book.dat reeor " & lt& ltendl
Exit (1);
}
outfile & lt& ltn & lt& ltendl
for(I = 0； I & ltn；; i++)
Outfile & lt& lt book [me]. Book _ no<& lt" ""<& lt book [me]. Book _ name & lt& lt" ""<& lt book [me]. Author & lt& lt ""
& lt& lt book [me]. Publisher & lt& lt" ""<& lt book [me]. ISBN & lt& lt" ""<& lt book [me]. Price & lt& lt" ""<& lt book [me]. Page & lt& ltendl
outfile . close()；
}
This is my code. Delete the book part, just change the comparison content from the book number to the title.