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.