Day of week program

This program has the basics for working with days of the week added to it. Use enums to improve the readability and scoping of this code.

#include <iostream>
#include <vector>

// Magic numbers for weekdays
const int MONDAY = 1;
const int TUESDAY = 2;
const int WEDNESDAY = 3;
const int THURSDAY = 4;
const int FRIDAY = 5;
const int SATURDAY = 6;
const int SUNDAY = 7;

std::string getDayName(int day) {
    switch (day) {
        case MONDAY: return "Monday";
        case TUESDAY: return "Tuesday";
        case WEDNESDAY: return "Wednesday";
        case THURSDAY: return "Thursday";
        case FRIDAY: return "Friday";
        case SATURDAY: return "Saturday";
        case SUNDAY: return "Sunday";
        default: return "Invalid day";
    }
}

int main() {
    std::vector<int> days = {1, 2, 3, 4, 5, 6, 7};

    for (int day : days) {
        std::cout << "Day " << day << " is " << getDayName(day) << std::endl;
    }

    return 0;
}

Answer

The variables MONDAY - SUNDAY has been moved into the Weekday enum

#include <iostream>
#include <vector>

// Enum class for weekdays
enum Weekday {
    MONDAY = 1,
    TUESDAY,
    WEDNESDAY,
    THURSDAY,
    FRIDAY,
    SATURDAY,
    SUNDAY
};

std::string getDayName(Weekday day) {
    switch (day) {
        case Weekday::MONDAY: return "Monday";
        case Weekday::TUESDAY: return "Tuesday";
        case Weekday::WEDNESDAY: return "Wednesday";
        case Weekday::THURSDAY: return "Thursday";
        case Weekday::FRIDAY: return "Friday";
        case Weekday::SATURDAY: return "Saturday";
        case Weekday::SUNDAY: return "Sunday";
        default: return "Invalid day";
    }
}

int main() {
    std::vector<Weekday> days = {Weekday::MONDAY, Weekday::TUESDAY, Weekday::WEDNESDAY, Weekday::THURSDAY, Weekday::FRIDAY, Weekday::SATURDAY, Weekday::SUNDAY};

    for (Weekday day : days) {
        std::cout << "Day " << day << " is " << getDayName(day) << std::endl;
    }

    return 0;
}