#include <iostream>
#include <cstdlib>
#include <string>   //for class string
#include <chrono>   //for class system_clock
#include <ctime>    //for the function localtime
using namespace std;

int main()
{
	struct language {
		string name;
		string weekdays[7];
	};

	const language languages[] {
		{"English", {"Sunday",    "Monday", "Tuesday",  "Wednesday", "Thursday",   "Friday",   "Saturday"}},
		{"Spanish", {"Domingo",   "Lunes",  "Martes",   "Miercoles", "Jueves",     "Viernes",  "Sabado"}},
		{"French",  {"Dimoanche", "Lundi",  "Mardi",    "Mecredi",   "Jeudi",      "Vendredi", "Samedi"}},
		{"German",  {"Sonntag",   "Montag", "Dienstag", "Mittwoch",  "Donnerstag", "Freitag",  "Samstag"}}
 	};

	const size_t n {size(languages)};  //the number of languages

	cout << "Choose your language:\n";

	for (int i {0}; i < n; ++i) {
		cout << "\t" << i << " for " << languages[i].name << "\n";
	}

	int lang {0};
	cin >> lang;

	if (lang < 0 || lang >= n) {
		cerr << "Sorry, bad language " << lang
			<< " must be in range 0 to " << n-1 << " inclusive.\n";

		return EXIT_FAILURE;
	}

	const auto now {chrono::system_clock::now()};
	const time_t t {chrono::system_clock::to_time_t(now)};
        const tm *const p {localtime(&t)};

        const int weekday {p->tm_wday}; //in range 0 to 6 inclusive; 0 is Sunday

	if (weekday < 0 || weekday >= 6) {
		cerr << "bad weekday "
			<< weekday << " must be in range 0 to 6 inclusive.\n";
		return EXIT_FAILURE;
	}

	cout << languages[lang].weekdays[weekday] << "\n";
	return EXIT_SUCCESS;
}