你的n到最后除法的时候，因为前面经过了while循环，现在n肯定是0，然后除以零就返回inf了
by SJH_qwq @ 2023-04-30 09:51:54
@[Wangyuqi123](/user/972388)
by SJH_qwq @ 2023-04-30 09:52:03
谢谢谢谢谢谢谢谢，老师讲了一遍，膜拜大佬！！！
```#include <iostream>
using namespace std;
int main(){
double max=0,min=10000,n,q,s,j=0,b;
cin>>n;
b=n-2;
while(n>=1){
cin>>q;
if(max<q)max=q;
if(min>q)min=q;
j=j+q;
n-=1;
}
j=j-(max+min);
s=j/b;
printf("%.2f",s);
return 0;
}
by Wangyuqi123 @ 2023-04-30 10:30:53
```cpp
#include<bits/stdc++.h>
using namespace std;
int main(){
double max=0,min=10000,n,q,s,j=0,b;
cin>>n;
b=n-2;
while(n>=1){
cin>>q;
if(max<q)max=q;
if(min>q)min=q;
j=j+q;
n-=1;
}
j=j-(max+min);
s=j/b;
printf("%.2f",s);
return 0;
}
```
by Terry2011 @ 2023-06-01 14:36:52