Page 76 -
P. 76

textual data


          The cost is embedded in the HTML


           Take a closer look at the results of the program. The current price
           of beans is right in the middle of the output:

















                                                           This is the price you need
                                  This is the HTML code    to extract from the page.
                                  from the price web page.





           The Starbuzz CEO would find it a lot easier if you could extract
           the price of beans and just display that, rather than have to look
           for it in the HTML. But how do you do that?


           A string is a series of characters


           The output of the Starbuzz program is an example of a string.
           In other words, it’s a series of characters like this:







           Somewhere within the string is the price of coffee beans. To
           retrieve just the price, all you need to do is go to the right bit
           of the string, retrieve the characters that give the price, and    You only need these few characters.
           display just those characters. But how?








                                                                                        you are here 4    41
   71   72   73   74   75   76   77   78   79   80   81