第12点wa，不知错在哪，求佬！！

liaoxiangkui @ 2024-01-06 18:07:35

#include<bits/stdc++.h>
using namespace std;
int main(){
    float x,sum,n;
    cin>>x;
    for(int i=1;i<=x;i++){
        cin>>n;
        sum+=n;
    }
    printf("%0.2f",sum/=x);
}

by OIerWu_829 @ 2024-01-06 18:11:59

@liaoxiangkui

用 double 试试？

by Hacker_Cracker @ 2024-01-06 18:14:11

float x,sum,n;

好好的 double 摆着不用...

by _IOI_THANKFUL @ 2024-01-06 18:16:06

#include<bits/stdc++.h>
using namespace std;
double x,sum,n;
int main(){
    cin>>x;
    for(int i=0;i<x;i++){
        cin>>n;
        sum+=n;
    }
    cout<<fixed<<setprecision(2)<<sum/x;
}

用setprecision过了

by liaoxiangkui @ 2024-01-06 18:16:39

c++14(GCC 9)

by _IOI_THANKFUL @ 2024-01-06 18:17:08

@liaoxiangkui

by liaoxiangkui @ 2024-01-06 18:20:41

@_IOI_THANKFUL 我只是小菜，看不懂

by liaoxiangkui @ 2024-01-06 18:23:30

@wzj0829 用double可以了， 谢大佬