例如，如果本题要求输入文件为“mark.in”，输出文件为“mark.out”，则freopen这样写：
```
freopen("mark.in","r",stdin);
freopen("mark.out,"w",stdout);
```
不过，最后还要加一个：
```
fclose(stdin);
fclose(stdout);
```
希望对你有帮助！
by Eason_AC @ 2018-10-27 15:50:44
```cpp
freopen(".in","r",stdin);
freopen(".out","w",stdout);
```
by RiverFun @ 2018-10-27 15:51:07
@[Eason_AC](/space/show?uid=112917) 要加```
fclose
```吗
by mcyqwq @ 2018-10-27 15:52:14
@[Eason_AC](/space/show?uid=112917)
太谢谢你了
by 281_33_oh_8_004 @ 2018-10-27 15:52:51
要加fclose吗
by mcyqwq @ 2018-10-27 15:52:52
@[__CZK__](/space/show?uid=121908) 是鸭，有什么问题吗
by Eason_AC @ 2018-10-27 15:52:53
@[Steve_braveman](/space/show?uid=96570)
也很谢谢你
by 281_33_oh_8_004 @ 2018-10-27 15:53:09
使用fclose，是为了避免爆零
by Eason_AC @ 2018-10-27 15:53:33
@[Eason_AC](/space/show?uid=112917) 哦，谢谢，我还不知道QWQ
by mcyqwq @ 2018-10-27 15:53:38
**在这里特别强调！**
by Eason_AC @ 2018-10-27 15:54:08