A greet message according to marks obtained by a student.

class Greet{

      public static void main(String args[]){

          int marks = Integer.parseInt(args[0]);                

         switch(marks/10){

            case 10:

            case 9:

            case 8:

                     System.out.println("Excellent");

                     break;

            case 7:

                     System.out.println("Very Good");

                     break;

            case 6:

                     System.out.println("Good");

                     break;

            case 5:

                     System.out.println("Work Hard");

                     break;

            case 4:

                     System.out.println("Poor");

                     break;

            case 3:

            case 2:

            case 1:

            case 0:

                     System.out.println("Very Poor");

                     break;

            default:

                     System.out.println("Invalid value Entered");

      }

 }

}