PL/I preprocessor: Difference between revisions

Revision as of 13:59, 26 January 2013

Revision as of 04:49, 9 April 2013

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%IF preprocessor-expression

%THEN preprocessor unit1

%ELSE preprocessor-unit2

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*'''%LEAVE''' terminates any remaining iterations of the containing preprocessor DO-group transfers control to the %END.

*'''%NOTE''' generates a user-specified preprocessor diagnostic message.

*'''%nullNULL''' is a preprocessor statement consisting only of an optional statement label and a ';'. It does nothing, but serves aas a placeholder where a required statement is not needed.

*'''%REPLACE''' allows immediate replacement of a ''name'' by a character or fixed expression. ''name'' does not have to be a declared preprocessor identifier.