/*
   lab10a.cpp
   7/4/2005
   CIS 150
   David G. Klick
   
   Demonstrates writing structures to a binary file.
*/

#include <iostream>
#include <fstream>
#include <cstring>
using std::cout;
using std::ofstream;
using std::ios;

struct Book {
   char title[40];
   char author[35];
   double price;
   int quantity;
};

int main(void) {
   ofstream ofile;  // used to handle output file

   // create a book object
   Book book1;
   
   // set fields in the book object
   strcpy(book1.title, "Designing CSS Web Pages");
   strcpy(book1.author, "Schmitt, Christopher");
   book1.price = 29.99;
   book1.quantity = 9;
   
   // create and set fields for a second book object
   Book book2 = { "CSS Cookbook",
                  "Schmitt, Christopher",
                  34.95, 12 };
                  
   // create and set fields for a third book object
   Book book3 = { "Eric Meyer on CSS",
                  "Meyer, Eric", 45.00, 10 };
                  
   // open random access file to write out books
   ofile.open("books.dat", ios::out | ios::binary);
   
   // display error if could not open file
   if (!ofile) {
      cout << "Error: Could not open output file!\n";
      return 1;
   }
   
   // write book objects to file
   ofile.write((char*)&book1, sizeof(Book));
   ofile.write((char*)&book2, sizeof(Book));
   ofile.write((char*)&book3, sizeof(Book));
   cout << "File created.\n";
   
   // close file
   ofile.close();
   
   return 0;
}