lassie% a.out Are you wearing shoes? yes Are you wearing a shirt? Yes Please come in. lassie% a.out Are you wearing shoes? Yes Are you wearing a shirt? no Please leave the premises. lassie% a.out Are you wearing shoes? no Are you wearing a shirt? yes Please leave the premises. lassie% a.out Are you wearing shoes? No Are you wearing a shirt? no Please leave the premises.