/****************************************************************************
 * beer-2.c
 *
 * David J. Malan
 * malan@harvard.edu
 *
 * Sings "99 Bottles of Beer on the Wall."
 *
 * Demonstrates a condition within a for 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");
    for (int i = n; i > 0; i--)
    {
        string s = (i == 1) ? "bottle" : "bottles";
        string t = (i == 2) ? "bottle" : "bottles";
    
        // sing verses
        printf("%i %s of beer on the wall,\n", i, s);
        printf("%i %s of beer,\n", i, s);
        printf("Take one down, pass it around,\n");
        printf("%i %s of beer on the wall.\n\n", i - 1, t);
    }
}