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SBASIC Manual - Page 31

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     SBasic User's Manual     SBasic Version 2.7             Page 31
     Printed:  December 5, 1999

               case  2                  ' if selector = 2...
               case  3                  ' or 3...
               foo = n + 2              ' change FOO
               endcase                  ' end of second case

               foo = 4                  ' default action...

     This example shows the use of multiple CASE statements within a CASE
     clause.  This feature comes in handy if your code must perform the
     same function for a group of selector values.

     This example also shows the method for performing a default action.
     The line FOO = 4 executes if no CASE clause matches the selector
     value.  Note that the default clause does not require an initial CASE
     statement or a terminating ENDCASE statement.

     Also, this example shows that the selector value for this example is
     an expression.  You can use any valid algebraic expression as the
     selector value in a SELECT statement.

     Note, however, that CASE statements only accept a numeric value, a
     constant, or a variable as an argument.  You cannot use an algebraic
     expression as the argument to a CASE statement!  Doing so will
     generate a compiler error.

     Finally, this example shows that you can change the selector value
     within a CASE clause, without affecting the actions of the SELECT
     statement.  This is because control passes to the ENDSELECT statement
     immediately after executing the code in any CASE clause.  Thus, any
     following CASE clauses do not evaluate the changed selector value.

     The EXIT statement allows you to leave a looping structure before the
     terminating condition, if any, is reached.  Control automatically
     jumps to the end of the currently active looping structure.

     You can also use EXIT to leave a SELECT-CASE structure.  In this case,
     control will jump to the corresponding ENDSELECT statement.


          for n = 1 to 10
               if n = 5

     Here, control automatically leaves the FOR-NEXT loop when N equals 5.