Syntax
SELECT [CASE] expression
[CASE expressionlist]
[statements]
[CASE ELSE]
[statements]
ENDSELECT
Description
Select case executes specific code depending on the value
of an expression. If the expression matches the first case then it's code is
executed otherwise the next cases are compaired and if one case matches then its
code is executed. If no cases are matched and there is a 'case else' on the end
then it wll be executed, otherwise the whole select case block will be skipped.
Syntax of an expression list:
expression [{TO expression | relational operator expression}][, ...]
example of expression lists:
CASE
"A"
' the "A" is equivalent to $41, multi-character strings can not be
used in CASE statements
CASE 5 TO 10
CASE > "e"
CASE 1, 3 TO 10
CASE 1, 3, 5, 7, 9
Example
PRINT "Choose a number between 1 and 10: "
DEBUGIN choice
SELECT choice
CASE 1
PRINT "number is 1"
CASE 2
PRINT "number is 2"
CASE 3, 4
PRINT "number is 3 or 4"
CASE 5 TO 10
PRINT "number is in the range of 5 to 10"
CASE
<= 20
PRINT "number is in
the range of 11 to
20"
CASE ELSE
PRINT "number is outside the 1-20 range"
ENDSELECT
Differences from other BASICs
- SELECT CASE is used in Visual BASIC
- SELECT is used in PBASIC
- either is allowed in ARMbasic
- Visual BASIC uses an optional IS before relational operators
- ENDSELECT is used to terminate the SELECT in both
ARMbasic and PBASIC
- END SELECT (seperate words) are used in Visual BASIC
and is allowed in ARMbasic
See also
