#include <iostream>
using namespace std;
class internal
{
    public:
    int rn,cq,ca,ci,dq,da,di;
    char name[20];
    void cpp()
    {
        cout<<"\n Enter a Student Name:";
        cin>>name;
        cout<<"\n Enter a Roll Number:";
        cin>>rn;
        cout<<"\n Enter a C++ quiz mark:";
        cin>>cq;
        cout<<"\n Enter a C++ Assignment mark:";
        cin>>ca;
        cout<<"\n Enter a C++ Internal mark:";
        cin>>ci;
    }
    void dtp()
    {
        cout<<"\n Enter a DTP quiz mark:";
        cin>>dq;
        cout<<"\n Enter a DTP Assignment mark:";
        cin>>da;
        cout<<"\n Enter a DTP Internal mark:";
        cin>>di;
        cout<<"\n============================";
    }
    void display()
    {
        cout<<"\nStudent Name:"<<name<<"\nRoll Number:"<<rn;
        cout<<"\nC++ Quiz:"<<cq<<"\nC++ Assignment:"<<ca<<"\nC++ Internal:"<<ci;
        cout<<"\nDTP Quiz:"<<dq<<"\nDTP Assignment:"<<da<<"\nDTP Internal:"<<di;
    }
};
class external
{
    public:
    int ce,de;
    void ex()
    {
    cout<<"\n============================";
    cout<<"\n Enter a C++ External Mark:";
    cin>>ce;
    cout<<"\n Enter a DTP External Mark:";
    cin>>de;
    cout<<"\n============================";
    }
    void show()
    {
        cout<<"\n============================";
        cout<<"\nC++ External:"<<ce<<"\nDTP External:"<<de;
        cout<<"\n============================";
    }
};
class result:public internal,public external
{
    int x,y;
    public:
    void add()
    {
        x=cq+ca+ci+ce;
        cout<<"\nSemester Mark of C++:"<<x;
        y=dq+da+di+de;
        cout<<"\nSemester Mark of DTP:"<<y;
    }
};
int main()
{
    cout<<"\nSTUDENT MARKLIST";
    cout<<"\n=================";
    result x;
    x.cpp();
    x.dtp();
    x.display();
    x.ex();
    x.show();
    x.add();
    return 0;
}