Setting A Bit Value To (@param='C') Ie True Or False

I want to pass a single char to a query and use that to set two flags.

(

@ID int,

@AssessedID int,

@CompetencyID int,

@Status char,

@Creator int

)



AS

UPDATE P4_Assessment

SET P4_Cancelled_f = (@Status = ('C')),

P4_Competent_f = (@Status = ('P')),

P4_Date = getdate(),

P4_Creator = @Creator

WHERE P4_ID = @ID


I want to set the P4_Cancelled_f to true (if @Status = 'C') or false if it doesn't.
This sort of syntax is fine in C#, but fails in a query. I also tried using IN (@Status IN ('C'))


Is this sort of logic possible in TSQL or should I use two parameters and set them in my code as 1 or 0?

TIA