#include<iostream>
using namespace std;
class HighSchoolGrade
{
    public:
    int input()
    {
        int score=0;
        cout<<" Input total score : ";
        cin>>score;
        if(score>100)
           cout<<"Error :"<<endl;
           
            else if(score>=80)
               cout<<"Grade 4 :"<<endl;
                else if(score>=75)
                   cout<<"Grade  3.5 :"<<endl;
                    else if(score>=70)
                       cout<<"Grade  3 :"<<endl;               
                        else if(score>=65)
                        cout<<"Grade  2.5 :"<<endl;
                            else if(score>=60)
                            cout<<"Grade  2 :"<<endl;
                                else if(score>=55)
                                cout<<"Grade  1.5 :"<<endl;
                                    else if(score>=50)
                                    cout<<"Grade  1 :"<<endl;
                                           else if (score>=0)
                                        cout<<"Grade  0 :"<<endl;
       cout<<"    ....End of program....";                            
    }
    void Displaynumber(int score)
    {
        int loop=1;
        while(loop<=score)
        {
            cout<<"Loop"+loop;
            loop++;
    }
        }
    };
class playLoop
{
    public:
    void main()
    {
        HighSchoolGrade  p;
        p=new HighSchoolGrade ();
        int Score=0;
        p.Displaynumber(Score);
    }
};