Difference between revisions of "Error Messages/40020"
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Correct the condition for the while loop so it evaluates to true or false. | Correct the condition for the while loop so it evaluates to true or false. | ||
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+ | == Suggested revised message == | ||
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+ | In a construct "WHILE <b> DO <e>", the condition <b> 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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<comments /> | <comments /> |
Revision as of 19:39, 19 February 2010
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.
Comments
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