Re: Evaluation of IF-Statements

NCL guarantees left-to-right evaluation.
"lazy expression evaluation' is used.

   if ( a .and. b .and. c .....) then
         ....
   end if
If "a" is False ... no further expressions will be evaluated
and the 1st statement after the "end if" will be executed

if "a" is True, "b" will be evaluated. If "b" is True
then "c" will be evaluated; If "b" is False then the 1st
statement after the "en if" will be executed. etc

Punch line ... put the most likely to fail 1st.

D

Lunde, Bruce N CIV NAVOCEANO, NP1 wrote:
> Hello,
>
> * Are both parts of "if( a .and. b )then" tested if "a" is False ??
> * Are both parts of "if( a .or. b )then" tested if "a" is True ??

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Received on Fri Aug 17 2007 - 09:30:01 MDT