main()
{ 
   int A;

   A = 7;
   switch(A)
   {
      case 1: 	/* A is one if we are here */ break;
      case 2: 	/* A must be 2 here */
      case 3: 	/* It could also be a three because 
         			we have no break on 2 */ break;
      case 6: 
      {			/* If it is a 6, we have a block here */
         		/* This block can have many line of code */
               /* But we should end it with a break */
               break;
      }
      default: /* Here A could be a 0 or less of 4,5,7 or 
         		more because we did not test for them and 
               we defaulted */
   }
}