一个C++程序

void Student::total()
{sum += score;
count ++;
}

float Student::average()
{return(sum/count);
}

float Student::sum = 0;
int Student::count = 0;

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;
}

一个C++程序

原文：http://blog.51cto.com/13615683/2103733