/******************************************************************************
 * This program computes the prices of soda on sale.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#undef NDEBUG

#include <cmath>
#include <fmt/format.h>
#include <iostream>
#include <string>

using namespace std;

static double const PRICE_PER_BOTTLE = 1.29;
static int const FREE_BOTTLE = 3;
int main(int argc, char **argv) {
    for (int i = 1; i <= 12; ++i) {
        double price = i * PRICE_PER_BOTTLE;
        price -= floor(i / double(FREE_BOTTLE)) * PRICE_PER_BOTTLE;
        cout << fmt::format("{0:d} bottle(s) is ${1:.2f}", i, price) << endl;
    }
    return 0;
}