IF...END IF
(Statement)
Conditionally execute specified statement blocks depending upon the evaluation of a conditional expression.
IF <conditional expression> THEN
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[ELSEIF <conditional expression> THEN]
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[ELSE]
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END IF
This statement controls the execution of statement blocks depending upon the evaluation of <conditional expression>.
If <conditional expression> of the IF statement is true (not 0), the statement block following IF and preceding ELSEIF is executed; if false (0), <conditional expression> of the ELSEIF statement is evaluated. In this manner, subsequent statement blocks are also evaluated and executed depending upon the result.
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DIM li1 As Integer
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IF li1 = 0 THEN
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'If li1 is 0
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STOP
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'Stop program execution
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ELSEIF li1 = 1 THEN
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'If li1 is 1
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GOTO *samp1
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'Jump to the label *samp1
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GO TO *samp2
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'Jump to the label *samp2
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ELSEIF li1 = 2 THEN
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'If li1 is 2
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GOSUB *samp3
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'Call the subroutine beginning with the label name *samp3
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ELSE
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'If li1 is any other value
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RETURN
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'Return to the caller program
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END IF
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'Declare the end of the IF statement
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