/****************************************************************************
 * beer-1.c
 *
 * David J. Malan
 * malan@harvard.edu
 *
 * Sings "99 Bottles of Beer on the Wall."
 *
 * Demonstrates a while loop.
 ***************************************************************************/

#include <cs50.h>
#include <stdio.h>

int main(void)
{
    // ask user for number
    printf("How many bottles will there be? ");
    int 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("%i bottle(s) of beer on the wall,\n", n);
        printf("%i bottle(s) of beer,\n", n);
        printf("Take one down, pass it around,\n");
        printf("%i bottle(s) of beer on the wall.\n\n", n - 1);
        n--;
    }
}