#include <iostream>
using namespace std;
class Student
{
public:
Student(int n,int a,float s):num(n),age(a),score(s){};
void total();
static float average();
private:
int num;
int age;
float score;
static float sum;
static int count;
};
void Student::total()
{
sum+=score;
count++;
}
float Student::average()
{
return(sum/count);
}
float Student::sum=0;//如果不赋初值可不可以
int Student::count=0;//如果不赋初值可不可以
int main()
{
Student stud[3]={
Student(1001,18,70),
Student(1002,19,78),
Student(1005,20,98)
};
int n;
cout<<"please input the number of students";
cin>>n;
for(int i=0;i<n;i++)
stud[i].total();
cout<<"the average score of"<<n<<"student is"<<Student::average()<<endl;
return 0;
}
//请大侠把修改后的代码贴出来,或者把需要修改的地方修改了说一下