String[] d = new String[7];
        d[0] = "Monday";
        d[1] = "Tuesday";
        d[2] = "Wednesday";
        d[3] = "Thursday";
        d[4] = "Friday";
        d[5] = "Saturday";
        d[6] = "Sunday";

        if (c >= 0 && c <=7) {
            System.out.println(d[c-1]);
        }
        else
            System.out.println("No such day of the week");