main()
{
  /*
   * Test out logic statements
   */
   int i;

  /* for loop */
  for ( i=0; i < 3; ++i)
     printf("for: i = %ld of 3\n", i );

  /*
   * while loop
   */

  i = 0;
  while ( i < 3 )
    {
       printf("while: i = %ld of 3\n", i );
       ++i;
    }

  /*
   * do until
   */
  i = 0;
  do
    {
      printf("do until: i = %ld of 3\n", i);
      ++i;
    }
      while( i < 3 );

   /*
    * if ... then ... else
    */

   i = 3;
   if ( i < 3 )
      printf("if: i = %ld < 3 Test Ok\n", i);
   else
      printf("if: i = %ld < 3 Test false\n", i);

   /*
    * switch statement.
    */

   for ( i = 0; i < 4; i++ )
     {
	switch(i)
	  {
		case 0: printf("At Case 0: i=%ld\n", i);
			break;
		case 1: printf("At Case 1: i=%ld\n", i);
			break;
		case 2: printf("At Case 2: i=%ld\n", i);
			break;
		default: printf("At default: i=%ld\n", i);
			break;
	  }
     }
}