1、if x>3 then x=32、if x>3 then x=3 else x=03、if x>3 then x=3else x=0endif4、if x>3 then x=3elseif x<3 then x=0else x=-1endif5、select case x case is>3 x=3 case is<3 x=0 case else x=-1end select
