IF Statement
The IF statement evaluates a condition and provides for alternative actions in the object program, depending on the evaluation.
IF Statement — Format >>-IF--condition--+------+--------------------------------------> '-THEN-' .-----------------. V | >--+-+-----statement-1---+-+--+-------------------------------+-----+->< | '-NEXT SENTENCE-------' | .-----------------. | | | | V | | | | '-ELSE--+-----statement-2---+-+-' | | '-NEXT SENTENCE-------' | | .-----------------. .-----------------. | | V | V | | '-----statement-1---+--+-ELSE------statement-2---+--+--------+-+-' | '-END-IF-' | '-END-IF--------------------------------'
The scope of an IF statement can be terminated by any of the following:
- An END-IF phrase at the same level of nesting
- A separator period
- If nested, by an ELSE phrase associated with an IF statement at a higher level of nesting
Related Information:
- condition
- May be any simple or complex condition, as described in Conditional Expressions.
- statement-1, statement-2
- Can be any one of the following:
- An imperative statement
- A conditional statement
- An imperative statement followed by a conditional statement
- NEXT SENTENCE
- If the END-IF phrase is specified, the NEXT SENTENCE phrase must not
be specified.
IBM Extension
IBM Extension NEXT SENTENCE can be specified with END-IF. End of IBM Extension
End of IBM Extension - ELSE NEXT SENTENCE
- May be omitted if it immediately precedes a separator period that ends the IF statement.
