// sample-main.cpp: a C++ program that uses both sample headers.
// Free sample from 99helpers.com/file-types/h
//
// sample-header.h belongs to a C library, so compile its .c file with a C
// compiler, then link the object file into the C++ program:
//     cc -Wall -Wextra -std=c17 -c sample-header.c
//     c++ -Wall -Wextra -std=c++20 sample-main.cpp sample-header.o -o stats-cpp
//     ./stats-cpp
// sample-header-only.hpp needs no build step at all.
#include <iomanip>
#include <iostream>
#include <vector>

#include "sample-header-only.hpp"
#include "sample-header.h"  // its extern "C" block makes the C functions link

int main()
{
    const std::vector<double> temperatures{12.5, 14.0, 9.5, 17.25, 15.0, 11.75};

    // The C library, called from C++.
    stats_t week;
    stats_init(&week);
    for (double t : temperatures) {
        stats_add(&week, t);
    }
    std::cout << stats_library_name << " (C++)\n" << std::fixed << std::setprecision(2)
              << stats_count(&week) << " values, mean " << stats_mean(&week) << '\n';

    // The header-only C++ library.
    std::cout << sample::library_name << ", average " << sample::average(temperatures)
              << '\n';
    for (double t : temperatures) {
        std::cout << std::setw(6) << t << ' ' << sample::bar(t, stats_max(&week)) << '\n';
    }
}