Error Messages/40020

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Revision as of 19:39, 19 February 2010 by Xjiang (talk | contribs)

Error Message Examples

The condition for "while" evaluates to an array. It should evaluate to true(non-zero) of false(zero).

Cause

This error is caused when an array is passed as the condition of a while loop. The following code will produce this error as Time is an array and "Time > 5" will evaluate to an array.

Var a:= 5;
While( Time > 5 ) Do{
a++;
}
...

Remedies

Correct the condition for the while loop so it evaluates to true or false.

Suggested revised message

In a construct "WHILE DO <e>", the condition should be a scalar (true(non-zero) or false(zero)), but not an array. See the User Guide Chapter "Procedural Programming" section on "Ensuring Array Abstraction" on how to deal with this.



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