Pivot Example When You Don't Know The Exact Values To Pivot On

Say, I have the following temporary table (@tbl) where the QuestionID field will change values over time

Survey QuestionID Answer
1 1 1
1 2 0
2 1 1
2 2 2


I'd like to perform a pivot on it like this: select * from @tbl Pivot (min(Answer) for QuestionID in ([1], [2])) as PivotTable

...however, I can't just name the [1], [2] values because they're going to change.

Instead of naming the values like this:
for QuestionID in ([1], [2], [3], [4])


I tried something like this:
for QuestionID in (select distinct QuestionID from @tbl)

but am getting a syntax error. Is it possible to set up a pivot like this:
select * from @tbl Pivot (min(Answer) for Question_CID in (select distinct @QuestionID from @tbl)) as PivotTable

or does anyone know another way to do it?