就这样不知道怎么回事
by 快乐的大童 @ 2021-07-18 20:04:45
getchar读了多余的东西进来
如果想用getchar改成下面这样
```cpp
char ch;
do{ch=getchar();}while(ch!='M'&&ch!='C');
```
就是说一直读入到读入了你想要的东西
by cbdsopa @ 2021-08-02 17:54:10
当然也可以用cin
by cbdsopa @ 2021-08-02 17:55:14
@[cbdsopa](/user/132530) 感谢大佬
by 快乐的大童 @ 2021-08-10 18:49:50