Syntax question

lardom

. I'm trying to write a statement that copies a value to the next 'empty' element in a variable array. I'm still working through the logic but I had a question about syntax

repeat until Y(index) == 0
   Y(index)++
Y(index) := X

Phil Pilgrim (PhiPi)

repeat while Y[index]
  index++
Y[index] := X

-Phil

lardom

Thanks.

lardom

I'm trying to state the rule. As 'Y[index]' increments I would think that the result value is copied to 'repeat'. I'm guessing that the rule is "Zero equals clear by default" which permits the loop to exit?

Phil Pilgrim (PhiPi)

lardom wrote:

I'm trying to state the rule. As 'Y[index]' increments ...

I think you mean, "As index increments ..."

lardom wrote:

I'm guessing that the rule is "Zero equals clear by default" which permits the loop to exit?

Yes. Y[index] in the while clause is true as long as the element being tested is non-zero. As soon as a zero element is found, the loop exits without executing again and incrementing the index.

-Phil

lardom

Thanks again Phil. :cool: That really is a big deal to me because a lot more programming language will make sense now.