Multiple Inheritance :: Student Details

#include<iostream.h>
#include<conio.h>
class pupil
{
    int rn;
    public:
        void putno(int);
        void getno(void);
};
void pupil::putno(int r)
{
    rn=r;
}
void pupil::getno()
{
    cout<<"\n Roll Number: "<<rn;
}
class marks:public pupil
{
    public:
    int guj,eng;
        void putmarks(int,int);
        void getmarks(void);
};
void marks::putmarks(int m1,int m2)
{
    guj=m1;
    eng=m2;
}
void marks::getmarks()
{
    cout<<"\n Marks Of Gujarati: "<<guj;
    cout<<"\n Marks Of English: "<<eng;
}
class result:public marks
{
    int total,avg;
    public:
        void display(void);
};
void result::display()
{
    total=guj+eng;
    avg=total/2;
    getno();
    getmarks();
    cout<<"\n Total Marks: "<<total;
    cout<<"\n Average Marks: "<<avg;
}
void main()
{
    clrscr();
    result r1;
    r1.putno(331);
    r1.putmarks(95,95);
    r1.display();
    getch();
}

Here Is The Output :)