Practicing Classes and functions

#include <iostream>
#include <format>

class myGames {
public:
    std::string gameName{};
    int hoursPlayed{};
    int month{};
    int day{};
    int year{};
    std::string datePlayed{};

    void dateFormat() {
        datePlayed = std::format("{}.{}.{}", month, day, year);
    };
};

int main() {
    myGames myGame1;
    myGame1.gameName = "Garry's Mod";
    myGame1.hoursPlayed = 1509;
    myGame1.month = 04;
    myGame1.day = 15;
    myGame1.year = 2024;
    myGame1.datePlayed;
    myGame1.dateFormat();

    myGames myGame2;
    myGame2.gameName = "Content Warning";
    myGame2.hoursPlayed = 73;
    myGame2.month = 04;
    myGame2.day = 16;
    myGame2.year = 2024;
    myGame2.datePlayed;
    myGame2.dateFormat();

    myGames myGame3;
    myGame3.gameName = "Squad";
    myGame3.hoursPlayed = 70;
    myGame3.month = 04;
    myGame3.day = 06;
    myGame3.year = 2024;
    myGame3.datePlayed;
    myGame3.dateFormat();

    std::cout << "Game 1: " << myGame1.gameName << "\n" << "Hours Played: "
              << myGame1.hoursPlayed << "\n" << "Last Played: " << myGame1.datePlayed << "\n\n";
    std::cout << "Game 2: " << myGame2.gameName << "\n" << "Hours Played: "
              << myGame2.hoursPlayed << "\n" << "Last Played: " << myGame2.datePlayed << "\n\n";
    std::cout << "Game 3: " << myGame3.gameName << "\n" << "Hours Played: "
              << myGame3.hoursPlayed << "\n" << "Last Played: " << myGame3.datePlayed;

    return 0;
}