HP Prime speed vs TI-Nspire CX

[toml_12953]

(11-09-2016 08:44 AM)ttw Wrote:  Without GOTOs, error handling is hard.

In ANSI (ISO) BASIC, error handling is done this way:

WHEN EXCEPTION IN
<code block>
USE
<error handling code>
END WHEN

Contrived simple example: square root error

Code:

DO
   LET ERRFLAG = 0
   INPUT PROMPT "ENTER A NUMBER": N
   WHEN EXCEPTION IN
      LET X = SQR(N)
   USE
      PRINT "ERROR IN SQUARE ROOT"
      LET ERRFLAG = -1
   END WHEN
LOOP UNTIL ERRFLAG = 0
PRINT "THE SQUARE ROOT OF";N;";"IS";X
END

No need for GOTO even in error handling.

Tom L