- data wanted;
- input event $30.;
- if index(event,"我") and index(event,"小明") then flag=1;
- else if index(event,"我") and not index(event,"小明") then flag=2;
- else if index(event,"我") or index(event,"小明") then flag=3;
- cards;
- 今天,我和小明出去玩。
- 我说:你好。
- 小明今天没来上课
- ;
- run;