作业 实验4

#include<iostream>using namespace std;class student{private:double score;static double total_score;static double count;public:void account(double n){score=n;total_score+=score;count++;}static double sum(){return total_score;}static double aver(){return(total_score/count);}};double student::total_score=0.0;double student::count =0;int main(){student stu[4];stu[1].account (66);stu[2].account (77);stu[3].account (88);stu[4].account (99);cout<<"所有学生的总成绩为："<<student::sum()<<endl;cout<<"所有学生的平均分为："<<student::aver()<<endl;return 0;}