Wednesday, 10 November 2004, at start of class.

This is the (familiar) song:

Ninety-nine bottles of beer on the wall.
Ninety-nine bottles of beer.
What would happen if one should fall?
Ninety-eight bottles of beer on the wall.

Ninety-eight bottles of beer on the wall.
Ninety-eight bottles of beer.
What would happen if one should fall?
Ninety-seven bottles of beer on the wall.

Ninety-seven bottles of beer on the wall.

... (and so on until) ...

zero bottles of beer on the wall.

   String[] ones =
      {"zero", "one", "two",   "three", "four",
       "five", "six", "seven", "eight", "nine"};
   String[] teens =
     {"Zero",    "One",     "Two",       "Three",    "Four",
      "Five",    "Six",     "Seven",     "Eight",    "Nine",
      "Ten",     "Eleven",  "Twelve",    "Thirteen", "Fourteen",
      "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"};
   String[] tens =
     {"",      "Ten",   "Twenty",  "Thirty", "Forty",
      "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"};

   String shortB = " bottles of beer.";
   String longB  = " bottles of beer on the wall.";
   String wall   = "What would happen if one should fall?";

   public String toEnglish(int n) {
      // convert n, 0 <= n <= 99, to an English string and return it
   }

   public void printSong() {
      // print the entire song
   }

1. First write a function (method) toEnglish that will convert its int input parameter (in the range from 0 to 99 inclusive) to English. [Hints: You must use the predefined arrays of Strings, and not try to write this method in the way that Project 1 was written. First handle an input parameter value n < 20 with the teens array. Remember, if the input parameter is n = 47 then n/10 will equal 4 and you can use the tens array. Similarly n%10 will equal 7 and you can use the ones array. Then concatenate.]

2. Then write a method printSong() that will print the whole song. [Hints: Use a loop with a variable going from 99 down to 1. You must use a loop; you cannot suggest writing 99 segments of code.]

3. As a final small problem, add code to get rid of the "s" on the end of "bottles" when you get to "One bottle of beer ...".

1. Source listings (the Java code) for the program.

2. Truncated result of a run.

   Note: You should use netBeans, though it is permissible to use Java from another source. In netBeans, the simplest way to make up the material to print is to just copy from netBeans (using ctrl-C) and paste into Word or WordPad (using ctrl-V). Then print the resulting document. You can assemble all 5 programs into a single document to print.

   In case your program doesn't produce output or doesn't produce the correct output, you should still turn in a listing for part credit.