/****************************************************************************
 * beer2.c
 *
 * Computer Science 50
 * David J. Malan
 *
 * Sings "99 Bottles of Beer on the Wall."
 *
 * Demonstrates a while loop (and an opportunity for hierarchical
 * decomposition).
 ***************************************************************************/
       
#include <cs50.h>
#include <stdio.h>

int
main(int argc, char * argv[])
{
    int n;

    /* ask user for number */
    printf("How many bottles will there be? ");
    n = GetInt();

    /* exit upon invalid input */
    if (n < 1)
    {
        printf("Sorry, that makes no sense.\n");
        return 1;
    }

    /* sing the annoying song */
    printf("\n");
    while (n > 0)
    {
        printf("%d bottle(s) of beer on the wall,\n", n);
        printf("%d bottle(s) of beer,\n", n);
        printf("Take one down, pass it around,\n");
        printf("%d bottle(s) of beer on the wall.\n\n", n - 1);
        n--;
    }

    /* exit when song is over */
    printf("Wow, that's annoying.\n");
    return 0;
}