End If: Difference between revisions
(Created page with "The END IF (EN IF) Statement can be used to end a multi-line IF structure. ===Comments and Examples=== A multiple-line IF structure is initiated when the IF statement end...") |
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The END IF (EN IF) [[Statement]] can be used to end a multi-line IF structure. | The END IF (EN IF) [[Statement]] can be used to end a multi-line [[IF]] structure. | ||
===Comments and Examples=== | ===Comments and Examples=== | ||
A multiple-line IF structure is initiated when the IF statement ends with an open-ended THEN or ELSE clause. (The term "open-ended" denotes a keyword that is not followed by an instruction until the next line.) | A multiple-line IF structure is initiated when the IF statement ends with an open-ended THEN or [[ELSE]] clause. (The term "open-ended" denotes a keyword that is not followed by an instruction until the next line.) | ||
There are two ways to terminate a multiple-line IF: | There are two ways to terminate a multiple-line IF: | ||
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===Syntax=== | ===Syntax=== | ||
END IF | |||
[[file:Endif.png]] | [[file:Endif.png]] | ||
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1.) IF nesting is allowed in multi-lined IF structures only. Nested multi-lined IFs are terminated in reverse order. | 1.) IF nesting is allowed in multi-lined IF structures only. Nested multi-lined IFs are terminated in reverse order. | ||
2.)Required to terminate a multi-line IF structure. | 2.)Required to terminate a multi-line IF structure. | ||
<noinclude> | |||
[[Category:Statements]] | |||
[[Category:Branching Statements]] | |||
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Latest revision as of 16:04, 24 April 2014
The END IF (EN IF) Statement can be used to end a multi-line IF structure.
Comments and Examples
A multiple-line IF structure is initiated when the IF statement ends with an open-ended THEN or ELSE clause. (The term "open-ended" denotes a keyword that is not followed by an instruction until the next line.)
There are two ways to terminate a multiple-line IF:
- a.) with a single-lined ELSE statement
- b.) with an END IF statement.
The following example shows a multi-lined IF which is initiated with an open-ended THEN clause and which is terminated with a single-lined ELSE statement:
00010 IF X=2 THEN !:Initiates the multiple-line IF 00020 Y=1!: THEN instructions begin 00030 FOR Z=1 TO 10 00040 X$(Z)="" 00041 50 NEXT Z 00060 ELSE Y=0 !: Terminates the multiple-line IF
The following example shows a multi-lined IF which is initiated with an open-ended ELSE clause and which is terminated with an END IF statement:
00010 IF X=2 THEN Y=1 ELSE !:! Initiates the multi-line IF 00020 Y=0 00030 FOR Z=1 TO 10 00040 X$(Z)="" 00050 NEXT Z !:!ELSE instructions end 00060 END IF !:! Multi-line IF terminated
Syntax
END IF
Technical Considerations
1.) IF nesting is allowed in multi-lined IF structures only. Nested multi-lined IFs are terminated in reverse order. 2.)Required to terminate a multi-line IF structure.