#include <bits/stdc++.h>using namespace std;class Student {public:Student(const string& name, int score): itsName(name), itsScore(score) {}static float aver() {return sum_score / float(count);}void sum() {sum_score += itsScore;count++;}private:string itsName;int itsScore;static int sum_score;static int count;};int Student::sum_score = 0;int Student::count = 0;int main(){Student stu[5] ={Student("Ma",89),Student("Hu",90),Student("LU",95),Student("Li",88),Student("Gao",75)};for(int i=0;i<5;i++)stu[i].sum();cout<<"Average="<<Student::aver()<<endl;}