data AGE type I value '12'. if AGE < 0. write 'Illegal value'. elseif AGE >= 0 and AGE < 18. write 'Sorry, this is adult only.'. else. write 'Hi, wellcome.'. endif.case ... when .... when others ... endcase
data S(2) value 'F'. case S. " case sensitive when 'F'. write / 'Hi, girl.'. when 'M'. write / 'Hi, boy.'. when others. write / 'Who it is?'. endcase.