IF...THEN...ELSE
(Statement)
Conditionally execute specified statement depending upon the evaluation of a conditional expression.
IF <conditional expression> THEN {<statement>|<labelname>}
[ELSE {<statement>|<labelname>}]
This statement controls the execution of specified <statement>s depending upon the evaluation of <conditional expression>.
If <conditional expression> is true (not 0), <statement> immediately following THEN is executed. If it is false (0), <statement> immediately following ELSE is executed.
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IF i1 = 0 THEN STOP ELSE GOSUB *samp1
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'If i1 is 0, stop program execution. If i1 is any other value,
'call the subroutine beginning with the label name *samp1
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i1 = i1 + 1
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'Add
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END
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'Declare the end of program
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*samp1:
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'Define the subroutine label
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i0 =0
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'Assign 0 to i0
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RETURN
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'Return to the caller program
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