score

 #include<iostream>
 using namespace std;
 class student{
 public:
     int Input()
     {
         for(i=;i<;i++)
         {
             cout<<"Please Input "<<i+<<" Student's Number And Scores:"<<endl;
             cin>>number[i];
             for(j=;j<;j++)
                 cin>>score[i][j];
         }
         return ;
     }

     int calculateall()
     {
         for(i=;i<;i++)
         {
             ave[i]=;
             for(j=;j<;j++)
                 ave[i]=ave[i]+score[i][j];
             ave[i]=ave[i]/5.0;
         }

         return ;
     }
     int calculateone(int n)
     {
         average=;
         for(i=;i<;i++)
             average+=score[i][n];
         return average/5.0;
     }
     int Output()
     {
         calculateall();
         for(i=;i<;i++)
         {
             cout<<"The number is "<<number[i]<<endl;
             for(j=;j<;j++)
                 cout<<score[i][j]<<" ";
             cout<<endl;
             cout<<"The average is "<<ave[i]<<endl;
         }
         return ;
     }
 private:
     char number[][];
     double score[][];
     double ave[];
     double average;
     int i;
     int j;
 };

 int main()
 {
     int n;
     class student stu1;
     stu1.Input();
     stu1.Output();
     cout<<"Please input the number of the class which you want calculate(0,1,2,3,4):"<<endl;
     cin>>n;
     cout<<"The class's average is: "<<stu1.calculateone(n)<<endl;
     return ;
 }