#include <iostream>
using namespace std;

// Contract: print2 : int& -> void
// Purpose: prints the numBottles'th verse of
//          "99 Bottles of Beer on the Wall"
//          to the screen, and REDUCES numBottle's
//          corresponding argument by 1.
//
// Examples: if variable val has the value 89,
//           print2(val) should cause the
//           following to be printed to the screen:
// 89 bottles of beer on the wall,
// 89 bottles of beer!
// Take one down, pass it around,
// 88 bottles of beer on the wall!
//           ... and val should be changed to 88.
//
// by: Sharon M. Tuttle
// last modified: 10-28-03

void print2(int& numBottles)
{
    // print the four lines of this verse, starting on a 
    //    new line
    cout << endl;
    cout << numBottles << " bottles of beer on the wall," 
         << endl;
    cout << numBottles << " bottles of beer," << endl;
    cout << "take one down, pass it around," << endl;
  
    // OK now --- I've made it pass-by-reference,
    //    and WARNED/told the user in the opening
    //    comment block;
    numBottles = numBottles - 1;
    cout << numBottles 
         << " bottles of beer on the wall." << endl;
}