/*
  CPP 230 - 9/17/2007
  by:  Joey Burgett
  Instructor:  Mark Laffoon
  
  Project:  Chapter 3; Number 5
            Display 'bottles of beers' ditty.
            
*/

#include <cstdlib>
#include <iostream>

// Function prototype
// @ Parameter 1 is the bottle of beer we're on.
void display(int);

using namespace std;

int main(int argc, char *argv[])
{
    for (int cnt=100; cnt > 0; --cnt)
    {
        for (int cnt2=0; cnt2<2; cnt2++)
        {
            display(cnt);
            if (cnt2==0) {
               cout << " bottles of beer on the wall,\n";
            } else {
               cout << " bottles of beer,\n";
            }
        }
        cout << "Take one down, pass it around,\n";
        display(cnt-1);
        cout << " bottles of beer on the wall.\n\n";
    }
    system("PAUSE");
    return EXIT_SUCCESS;
}

// Function to display english representations of numbers 1 thru 99.
void display(int iBottle)
{
     int iCount,iIndex;
     iCount=iBottle/10;
     iIndex=iBottle%10;
     
     switch (iCount)
     {
         case 2: cout << "Twenty"; break;
         case 3: cout << "Thirty"; break;
         case 4: cout << "Forty"; break;
         case 5: cout << "Fifty"; break;
         case 6: cout << "Sixty"; break;
         case 7: cout << "Seventy"; break;
         case 8: cout << "Eighty"; break;
         case 9: cout << "Ninety"; break;
     }     

     // If bottle number is > 12, add a ' ' between words
     if ((iIndex > 0) && (iCount > 1))
        cout << " ";
     
     if (iBottle<1) cout << "Zero";
     
     // Numbers to Text Prodcedure    
     switch (iIndex)
         {
          case  0: 
              if (iBottle==10) cout << "Ten"; break;
          case  1: 
              if (iBottle==11)
              {
                 cout << "Eleven";
              } else {
                 cout << "One"; 
              }
              break;
          case  2: 
              if (iBottle==12)
              {
                 cout << "Twelve";
              } else {
                 cout << "Two"; 
              }
              break;
          case  3:                 // Special case for thirteen or twenty-three
              if (iBottle==13)
              {
                 cout << "Thir";
              } else {
                 cout << "Three";
              }
              break;
          case  4: cout << "Four"; break;
          case  5:                 // Special case for fifteen or twenty-five
              if (iBottle==15)    
              {
                 cout << "Fif";
              } else {
                 cout << "Five";
              }
              break;
          case  6: cout << "Six"; break;
          case  7: cout << "Seven"; break;
          case  8: cout << "Eight"; break;
          case  9: cout << "Nine"; break;
     }
      //  If bottle count is > 12 but less than 20, postfix 'teen' to number
      if ((iBottle>12) && (iBottle<20)) cout << "teen";         
}