Database in SI. Why doesn't it compile further?

Question

C++ / C#

After entering the data, it does not proceed to enter the price and quantity.

Listing:

#include <stdio.h>
#include <stdlib.h>
#include<windows.h>
#include<conio.h>
#pragma warning(disable : 4996)
#define _CRT_SECURE_NO_WARNINGS


int main()
{
 typedef struct  
  {
    char book_name[40];
    float price;
    int qty;
  }book;



FILE* fptr;
  book b;
  char choice, filename[13];
  int size = sizeof(book);
  system("cls");
  printf_s("Enter the name of file for data storoge and retrieval:");
  gets_s(filename);
  fptr = fopen(filename, "a+");
  if (!fptr)
    printf_s("\n Cant't open source file for writting\n ");
  else {
    printf_s("\n Do you wish to store a book record (y/n)?\n");
    scanf_s("%c", &choice);
    while (choice == 'y' || choice == 'Y')
    {
      fflush(stdin);
      printf_s("\nEnter the book name\n");
      scanf_s("%[^/n]s", b.book_name);
      printf_s("Enter the price and quantity\n"); // Не появляется далее это.
      scanf_s("%f%d", &b.price, &b.qty);
      fwrite(&b, size, 1, fptr);
      fflush(stdin);
      
        printf_s("\n Do you wish to store another book record (y/n)?\n");
      scanf_s("%c", &choice);
    }
    fclose(fptr);
    system("cls");
    fptr = fopen(filename, "r+");
    if (!fptr)
      printf_s("\n Cant't open source file for reading\n ");
    else
    {
      printf_s("File %s contents are shown under field names\n\n", filename);
      printf_s("\n\t\t\tBook Title\t\t Price\t Quantity\n\n");
      while (fread(&b,size, 1, fptr) == 1)
        printf_s("%40s\t%8.2f&8d\n", b.book_name, b.price, b.qty);
      
      fclose(fptr);
    }

  }
}

Answer 1

scanf_s("%[^/n]s", b.book_name);
printf_s("Enter the price and quantity\n"); // Не появляется далее это.

It does not appear, because you have written nonsense in the previous line.