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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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Task/Undefined-values/REXX/undefined-values.rexx Normal file
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/*REXX program to test if a variable is defined. */
tlaloc = "rain god of the Aztecs."
/*check if the rain god is defined.*/
y='tlaloc'
if symbol(y)=="VAR" then say y 'is defined.'
else say y "ain't defined."
/*check if the fire god is defined.*/
y='xiuhtecuhtli'
if symbol(y)=="VAR" then say y 'is defined.'
else say y "ain't defined."
drop tlaloc /*un-define the TLALOC variable. */
/*check if the rain god is defined.*/
y='tlaloc'
if symbol(y)=="VAR" then say y 'is defined.'
else say y "ain't defined."