Notes

/*
Consider an example of declaring an examination result. Design three
classes: Student, Exam and Result.
-> The Student class has data members such as those representing Roll No.,
Name,etc.
-> Create a class Exam by inheriting the Student class. The Exam class adds
data members representing the marks scored in six subjects.
-> Derive class Result from Exam class and it has own data members such as
total_marks.
Write an interactive program to model this relationship. What type of
inheritance this model belongs to.
*/

#include <iostream.h>
#include <conio.h>
#include <stdio.h>

class Student
{
char rollno[20],name[50],branch[20];
public:
void set_student()
{
cout<<"Enter Student Name: ";
gets(name);

cout<<"Enter Roll No.: ";
gets(rollno);

cout<<"Enter Branch: ";
gets(branch);
}

char *getname()
{
return name;
}

char *getrollno()
{
return rollno;
}

char *getbranch()
{
return branch;
}
};

class Exam : public Student
{
int phy,chem,bio,maths,eng,hin;
public:
void setmarks()
{
cout<<"Enter Physics marks: ";
cin>>phy;

cout<<"Enter Chemistry marks: ";
cin>>chem;

cout<<"Enter Biology marks: ";
cin>>bio;

cout<<"Enter Mathematics marks: ";
cin>>maths;

cout<<"Enter English marks: ";
cin>>eng;

cout<<"Enter Hindi marks: ";
cin>>hin;

}
int getphy()
{
return phy;
}

int getchem()
{
return chem;
}

int getbio()
{
return bio;
}

int getmaths()
{
return maths;
}

int geteng()
{
return eng;
}

int gethin()
{
return hin;
}
};

class Result : public Exam
{
int total_marks,p,c,b,m,e,h;
float percentage;
public:
void result()
{
cout<<"Enter Student Details:nn";
set_student();
cout<<"nnEnter Marks Details:nn";
setmarks();
p = getphy();
c = getchem();
b = getbio();
m = getmaths();
e = geteng();
h = gethin();
total_marks = p+c+b+m+e+h;
percentage = total_marks/6;
}

void display()
{
cout<<"Student Details:nn";
cout<<"Student Name: "<<getname()<<endl;
cout<<"Roll Number: "<<getrollno()<<endl;
cout<<"Branch: "<<getbranch()<<endl;

cout<<"nMarks: n"<<endl;
cout<<"Physics: "<<p<<endl;
cout<<"Chemistry: "<<c<<endl;
cout<<"Biology: "<<b<<endl;
cout<<"Mathematics: "<<m<<endl;
cout<<"English: "<<e<<endl;
cout<<"Hindi: "<<h<<endl;

cout<<"Total: "<<total_marks<<endl;
cout<<"Percentage: "<<percentage<<endl;

}
};

void main()
{
clrscr();
Result R;

R.result();
clrscr();

R.display();

getch();
}