Object Oriented Programming Practical 11
Question 1
Write a C++ program to define a class "Student" having data members roll_no, name. Derive a class "Marks" from "Student" having data members m1,m2,m3, total and percentage. Accept and display data for one student.
student.cpp
C
#include<iostream.h>
#include<conio.h>
class student
{
int rollno;
char name[100];
public:
void accept()
{
cout<<"\nEnter name of student: ";
cin>>name;
cout<<"\nEnter roll number of student: ";
cin>>rollno;
}
void display()
{
cout<<"\nStudent name: "<<name;
cout<<"\nStudent rollno: "<<rollno;
}
};
class marks:public student
{
int m1,m2,m3,total;
float percent;
public:
void getdata()
{
cout<<"\nEnter marks 1: ";
cin>>m1;
cout<<"\nEnter marks 2: ";
cin>>m2;
cout<<"\nEnter marks 3: ";
cin>>m3;
}
void putdata()
{
total=m1+m2+m3;
percent=(total*100)/300.00;
cout<<"\nTest percent : "<<percent<<endl;
}
};
int main()
{
clrscr();
marks m;
m.accept();
m.getdata();
m.display();
m.putdata();
getch();
return 0;
}
Output
Question 2
Write a C++ program to implement following Multilevel Inheritance
person.cpp
C
#include<iostream.h>
#include<conio.h>
class person
{
int age;
char name[100],gender[10];
public:
void accept()
{
cout<<"\nEnter name of person: ";
cin>>name;
cout<<"\nEnter age of person: ";
cin>>age;
cout<<"\nEnter gender: ";
cin>>gender;
}
void display()
{
cout<<"\nPerson name: "<<name;
cout<<"\nPerson age: "<<age;
cout<<"\nPerson gender: "<<gender;
}
};
class employee:public person
{
int emp_id;
float salary;
char company[50];
public:
void getdata()
{
cout<<"\nEnter employee id: ";
cin>>emp_id;
cout<<"\nEnter company name: ";
cin>>company;
cout<<"\nEnter employee salary: ";
cin>>salary;
}
void putdata()
{
cout<<"\nEmployee id: "<<emp_id;
cout<<"\nEmployee company : "<<company;
cout<<"\nEmployee salary : "<<salary;
}
};
class programmer:public employee
{
int no_of_prog_lang_known;
public:
void get()
{
cout<<"\nEnter number of programmign languages known: ";
cin>>no_of_prog_lang_known;
}
void put()
{
cout<<"\nNumber of programmign languages known: "<<no_of_prog_lang_known;
}
};
void main()
{
clrscr();
programmer p;
p.accept();
p.getdata();
p.get();
p.display();
p.putdata();
p.put();
getch();
}
Output
