day of week

function daysOfWeek(arg1) {
    let num = Number(arg1);
    switch (num) {
        case 1:
            console.log("Monday");
            break;
            case 2:
                console.log("Tuesday");
                break;
                case 3:
                    console.log("Wednesday");
                    break;
                    case 4:
                        console.log("Thursday");
                        break;
                        case 5:
                            console.log("Friday");
                            break;
                            case 6:
                                console.log("Saturday");
                                break;
                                case 7:
                                    console.log("Sunday");
                                    break;
                                    default:
                                        console.log("Error");
                                        break;
    }
}

daysOfWeek("-1");