B2054 95分求助

LIUZHIYU1 @ 2023-03-13 20:45:36

#include<iostream>
#include<iomanip>
using namespace std;
int a,b;
double c=0;
int main(){
    cin>>a;
    for(int i=0;i<a;i++){
        cin>>b;
        c+=b/(double)a;
    }
    cout<<fixed<<setprecision(2)<<c;
}

by Sun_Email @ 2023-03-13 20:49:01

建议直接求和，然后拿和 \div a

by CSP_AK_zc @ 2023-03-13 20:50:08

#include<iostream>
#include<cstdio>
using namespace std;
int main() {
    double ans=0.0;
    long long n,age,i;
    cin>>n;
    for(i=1; i<=n; i++) {
        cin>>age;
        ans+=age;
    }
    ans=ans/n;
    printf("%.2f",ans);
}

供参考

抄袭

by CSP_AK_zc @ 2023-03-13 20:50:56

@LIUZHIYU1 此外，恭喜绿名

by LIUZHIYU1 @ 2023-03-13 20:52:10

@todd6222 谢谢鼓励!

by __er @ 2023-03-13 20:57:31

@LIUZHIYU1 一边加一边除精度掉飞了，有点常识，除法掉精度、、、

by Hihukeke @ 2023-04-15 17:25:04

jkfjjskajld;fjierfjjkdjfjdsfkrjhirkljjgrgklggfkgfjglkjljlsdlk lkj;ljlkjkl joirkforf9rj krl kjklj kjj ;lkjgjkjro'kgrjlgkjfgkgkjgirhgjgrirhggn;dfglkkdlgjlksj;jkfk;gjoijirgrngkll \

by LIUZHIYU1 @ 2023-05-28 09:49:34

@Hihukeke ? 不要刷屏