@[outerneo](/user/270530)
```cpp
if(i==0||i==b-1)
{
cout<<c;
}
```
这个应该改成
```cpp
if(i==0||i==a-1)
```
by Qiancy1427 @ 2022-07-03 14:06:19
@[Qiancy1427](/user/478917) 谢谢
by outerneo @ 2022-07-04 12:05:06