Documents/CW2/bookshop.cc

   1 // Copyright 2013 Carey Riley, Dwayne Reid
   2 //  A Bookshop Inventory Management System
   3 /*  A small Bookshop maintains the inventory of books sold in the shop. The list
   4  *  includes (but is not limited to) the following details:
   5  *   Author's name,
   6  *   Title of the book(s),
   7  *   Price of each each book,
   8  *   Publisher of each book,
   9  *   Stock levels of each type in a tabular form as shown below
  10  *  ----------------------------------------------------------------------
  11  *  |                  BOOKSHOP DATABASE                                   |
  12  *  ------------------------------------------------------------------------
  13  *  | Author's Name | Book Title | Unit Price | Publisher | Stock Count    |
  14  *  -----------------------------------------------------------------------
  15  *  | Deitel & Deitel| C++...Program| $2500.00| Pearson   |   15 Copies    |
  16  *  ------------------------------------------------------------------------
  17  *  |                |            |            |           |               |
  18  *  ------------------------------------------------------------------------
  19  *
  20  *  Whenever a customer wants a book, the sales person inputs the title and author
  21  *  and the system searches the list (database) and displays whether it is available
  22  *  or not. If available, the total cost of the requested copies is displayed;
  23  *  otherwise the message "Required copies not in stock" is displayed.
  24  *
  25  *  Design a system using a class called books with suitable member functions,
  26  *  member variables and constructors. Use the New operator in your constructors
  27  *  to apportion possible memory requriements. Objects created in main should be
  28  *  able to access appropriate member functions to carry out whichever task(s) they
  29  *  are designed to perform.
  30  *
  31  *  In writing your program, use comments to facilitate comprehension and explain
  32  *  all assumptions you might be forced to make for the system to function
  33  *  optimally. Innovation as well as user friendliness of your interface would be
  34  *  rewarded.
  35  */
  36
  37 /* TODO(Carey): disorded breakdown of needed actions
  38  * - class Books with functions, variables and constructors
  39  * - contructors should use the new operator
  40  * - comment, comment, comment
  41  * - search function:
  42        input title and author; searches inventory, returns total cost and
  43        requested number of copies.
  44    - anymore observations follow the above syntax of TODO(name||email): <todos>
  45 */
  46
  47 #include <iostream>
  48 #include <iomanip>
  49 // #include <cstdio>
  50 #include <string>
  51
  52 // put all global functions in an unnamed namespace so code is as OO as possible
  53 namespace {
  54   using std::setfill;
  55   using std::setw;
  56   using std::cout;
  57   using std::cerr;
  58
  59 // print stock shortage to screen
  60   void NotInStock(void) {cerr << "Required copies not in stock\n";}
  61
  62 // Stock Table layout with header
  63   void PrintStockTableHeader(void) {
  64     cout << setw(80) << setfill('_') << '\n' << setfill(' ') <<
  65     '|' << setw(41) << "BOOKSHOP DATABASE" << setw(38) << '|' << '\n' <<
  66     setw(80) << setfill('_') << '\n' << setfill(' ');
  67 /*    "| Author's Name |" <<
  68     "  Book Title      |" <<
  69     " Unit Price |" <<
  70     "  Publisher     |" <<
  71     "  Stock Count|" << '\n' <<
  72     setw(80) << setfill('_') << '\n' << setfill(' ');
  73 */
  74 // Share 80 spaces properly
  75     cout << "| Author's Name  ";  // about 17 spaces wide
  76     cout << "| Book Title        ";
  77     cout << "| Unit Price ";  // about 12 spaces wide
  78     cout << "| Stock Count |"; // about 13 spaces
  79
  80   };
  81
  82 // Attempt at a search function
  83   *SearchAuthorTitle(std::string author, std::string title, Books *booklist) {
  84       for(int i=0; i <= 10; ++i)
  85 // author and title string matches list instance
  86       (booklist[i].author_ == author && books[i].title_ == title) ?: booklist.ConstomerWants();
  87     };
  88 // If
  89
  90 // BookSearch(std::string, std::string) { }
  91 class Books {
  92   public:
  93     Books() : author_("Deitel & Deitel"),
  94               title_("C++...Program"),
  95               unitprice_(2500.00),
  96               publisher_("Pearson"),
  97               quantity_(15)
  98               {}
  99 //      {cout << "|" <<  author_ << " | " << title_ << " | " << unitprice_ <<
 100 //      " | " << publisher_ << " | " << quantity_ <<  "|" << '\n';
 101 //      };
 102     double CustomerWants(int quantity) {quantity_ <=  quantity ?: NotInStock() : return quantity * unitprice_;
 103   private:
 104     std::string author_;
 105     std::string title_;
 106     double unitprice_;
 107     std::string publisher_;
 108     int quantity_;
 109   };
 110
 111
 112 int main() {
 113 NotInStock();
 114 PrintStockTableHeader();
 115 Books shelf;
 116 shelf;
 117 }