Difference between revisions of "DO CASE"
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==Purpose== | ==Purpose== | ||
Multiple choice selection command | Multiple choice selection command | ||
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==Description== | ==Description== | ||
| − | The DO CASE command selects one course of action out of many alternatives. | + | The DO CASE command selects one course of action out of many alternatives. Recital evaluates each CASE <condition> in turn. As soon as one of the conditions evaluates to true (.T.) the <commands> for that CASE are executed and any further case statements are ignored. Following execution of the <commands>, the program continues after the ENDCASE statement. |
====OTHERWISE==== | ====OTHERWISE==== | ||
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If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE. | If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE. | ||
| − | CASE statements, as with all of the other Recital | + | CASE statements, as with all of the other Recital statements can be nested. In other words, a CASE statement can contain further DO CASE commands. |
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accept "Enter a command: " to command | accept "Enter a command: " to command | ||
do case | do case | ||
| − | + | case command = "BROWSE" | |
| − | + | browse | |
| − | + | case command = "DIR" | |
| − | + | dir | |
| − | + | otherwise | |
| − | + | set message to "Unknown command." | |
endcase | endcase | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
| − | Recital | + | Recital Server, Recital |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Commands]] | [[Category:Commands]] | ||
| + | [[Category:Applications]] | ||
| + | [[Category:Applications Commands]] | ||
| + | [[Category:Looping Commands]] | ||
Latest revision as of 14:04, 14 January 2010
Purpose
Multiple choice selection command
Syntax
DO CASE
CASE <condition>
[<commands>]
[CASE <condition>
[<commands>]]
[OTHERWISE
[<commands>]]
ENDCASE
See Also
@...MENU, DO WHILE, ICASE(), IF, IF(), IIF()
Description
The DO CASE command selects one course of action out of many alternatives. Recital evaluates each CASE <condition> in turn. As soon as one of the conditions evaluates to true (.T.) the <commands> for that CASE are executed and any further case statements are ignored. Following execution of the <commands>, the program continues after the ENDCASE statement.
OTHERWISE
If an OTHERWISE statement is present and no CASE <condition> evaluates to .T., the OTHERWISE <commands> are executed.
ENDCASE
If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE.
CASE statements, as with all of the other Recital statements can be nested. In other words, a CASE statement can contain further DO CASE commands.
Example
accept "Enter a command: " to command do case case command = "BROWSE" browse case command = "DIR" dir otherwise set message to "Unknown command." endcase
Products
Recital Server, Recital
