```cpp
if(t[t.size()-1]-'0'=='X')
check=10;
```
这里为什么要-‘0’
by Gokix @ 2020-02-17 13:30:47
@[Y_Kirito](/user/175846)
by Gokix @ 2020-02-17 13:31:23
@[gongxi](/user/150064)
啊。。。蟹蟹
by Y_Kirito @ 2020-02-19 13:54:21