C :

#include<stdio.h>
#include<string.h>
struct student
{
    double a,b,c,ave;
    char m[100],t[100],num[100];
} stu[20];

int main()
{
    int i,n,p;
    double max=0;
    scanf("%d",&n);
    for(i=1; i<=n; i++)
    {
        scanf("%s %s %s %lf %lf %lf",stu[i].m,stu[i].t,stu[i].num,&stu[i].a,&stu[i].b,&stu[i].c);
        stu[i].ave=(stu[i].a+stu[i].b+stu[i].c)/3;
    }

    for(i=1; i<=n; i++)
        if(stu[i].ave>max)
        {
            max=stu[i].ave;
            p=i;
        }

    printf("%s\n%s\n%s\n%.0lf %.0lf %.0lf\n",stu[p].m,stu[p].t,stu[p].num,stu[p].a,stu[p].b,stu[p].c);
    return 0;
}

C++ :

#include<iostream>
using namespace std;
struct T
{
    char name[20];
    char zy[100];
    char number[20];
    double score[3];
    double average;
}a[21];
int main()
{
    int n,j,i;
    double maxm;
    cin>>n;
    for(i=0;i<n;i++)
    {
        cin>>a[i].name>>a[i].zy>>a[i].number>>a[i].score[0]>>a[i].score[1]>>a[i].score[2];
        a[i].average=(a[i].score[0]+a[i].score[1]+a[i].score[2])/3;
    }

    maxm=a[0].average;
    j=0;
    for(i=1;i<n;i++)
        if(a[i].average>maxm)
           {
                j=i;
                maxm=a[i].average;
           }
        cout<<a[j].name<<endl;
        cout<<a[j].zy<<endl;
        cout<<a[j].number<<endl;
        cout<<a[j].score[0];
        for(i=1;i<3;i++)
            cout<<" "<<a[j].score[i];
            cout<<endl;
}