ooplab/lab6/file.org

• Create class first with data members book no, book name and member function getdata and putdata. Create a class second with data members author name ,publisher and members getdata and showdata. Derive a class third from first and second with data member no of pages and year of publication. Display all these information using an array of objects of third class.
• Create a base class called SHAPE. Use this class to store two double type values. Derive two specific classes called TRIANGLE and RECTANGLE from the base class. Add to the base class, a member function getdata to initialize base class data members and another member function display to compute and display the area of figures. Make display a virtual function and redefine this function in the derived classes to suit their requirements. Using these three classes design a program that will accept driven of a TRIANGLE or RECTANGLE interactively and display the area.
• Create a base class basic_info with data members name ,roll no, gender and two member functions getdata and display. Derive a class physical_fit from basic_info which has data members height and weight and member functions getdata and display. Display all the information using object of derived class.

Create class first with data members book no, book name and member function getdata and putdata. Create a class second with data members author name ,publisher and members getdata and showdata. Derive a class third from first and second with data member no of pages and year of publication. Display all these information using an array of objects of third class.

#include <iostream>
using namespace std;

class Book {
private:
  char name[50];
  uint id;

public:
  void getData();
  void putData();
};

void Book::getData() {
  cout << "Name of book: ";
  cin >> name;
  cout << "ID of book: ";
  cin >> id;
}

void Book::putData() {
  cout << "Name of book: " << name << endl << "ID of book: " << id << endl;
}

class Authorities : public Book {
private:
  char author[50];
  char publisher[50];

public:
  void getData();
  void putData();
};

void Authorities::getData() {
  cout << "Name of author: ";
  cin >> author;
  cout << "Name of publisher: ";
  cin >> publisher;
}

void Authorities::putData() {
  cout << "Name of author: " << author << endl
       << "Name of publisher: " << publisher << endl;
}

class Publication : public Authorities {
private:
  uint pageCount;
  uint year;

public:
  void getData();
  void putData();
};

void Publication::getData() {
  cout << "Number of pages: ";
  cin >> pageCount;
  cout << "Year (YYYY): ";
  cin >> year;
}

void Publication::putData() {
  cout << "Number of pages: " << pageCount << endl << "Year: " << year << endl;
}

int main() {
  Publication p[3];

  for (auto &x: p) {
    x.Book::getData();
    x.Authorities::getData();
    x.getData();
  }

  for (auto &x: p) {
    x.Book::putData();
    x.Authorities::putData();
    x.putData();
  }
}

ID of book: 4
Name of author: a.
Name of publisher: a.
Number of pages: 4
Year (YYYY): 4044
Name of book: sahi
ID of book: 5
Name of author: baat
Name of publisher: hai
Number of pages: 555555
Year (YYYY): 192
Name of book: how
ID of book: 349234
Name of author: ok
Name of publisher: test
Number of pages: 99991293
Year (YYYY): 2022
Name of book: Allu
ID of book: 4
Name of author: a.
Name of publisher: a.
Number of pages: 4
Year: 4044
Name of book: sahi
ID of book: 5
Name of author: baat
Name of publisher: hai
Number of pages: 555555
Year: 192
Name of book: how
ID of book: 349234
Name of author: ok
Name of publisher: test
Number of pages: 99991293
Year: 2022

Create a base class called SHAPE. Use this class to store two double type values. Derive two specific classes called TRIANGLE and RECTANGLE from the base class. Add to the base class, a member function getdata to initialize base class data members and another member function display to compute and display the area of figures. Make display a virtual function and redefine this function in the derived classes to suit their requirements. Using these three classes design a program that will accept driven of a TRIANGLE or RECTANGLE interactively and display the area.

#include <iostream>
#include <math.h>
using namespace std;

class Shape {
  int stub;

public:
  virtual void getData() { cout << "stub"; }

  virtual double area() {
    cout << "stub";
    return 0;
  }
};

class Triangle : public Shape {
private:
  double sides[3];

public:
  void getData();
  double area();
};

void Triangle::getData() {
  cout << "Enter 3 integers for the sides of triangle: \n";

  for (int i = 0; i < 3; i++)
    cin >> sides[i];
}

double Triangle::area() {
  double s = (sides[0] + sides[1] + sides[2]) / 2;

  return sqrt(s * (s - sides[0]) * (s - sides[1]) * (s - sides[2]));
}

class Rectangle : public Shape {
private:
  double l;
  double b;

public:
  void getData();
  double area();
};

void Rectangle::getData() {
  cout << "Enter length of rectangle: ";
  cin >> l;
  cout << "Enter breadh of rectangle: ";
  cin >> b;
}

double Rectangle::area() { return l * b; }

int main() {
  Shape *s;
  Triangle t;
  Rectangle r;

  s = &t;

  s->getData();
  cout << "Area of the Shape: " << s->area() << endl;

  s = &r;

  s->getData();
  cout << "Area of the Shape: " << s->area() << endl;

}

Enter 3 integers for the sides of triangle: 
4
4
4
Area of the Shape: 6.9282
Enter length of rectangle: 4
Enter breadh of rectangle: 4
Area of the Shape: 16

Create a base class basic_info with data members name ,roll no, gender and two member functions getdata and display. Derive a class physical_fit from basic_info which has data members height and weight and member functions getdata and display. Display all the information using object of derived class.

#include <iostream>
using namespace std;

class BasicInfo {
private:
  char name[30];
  uint enrollment;
  char gender;

public:
  void getData();
  void putData();
};

void BasicInfo::getData() {
  cout << "Name: ";
  cin >> name;
  cout << "Enrollment: ";
  cin >> enrollment;
  cout << "Gender: ";
  cin >> gender;
}
void BasicInfo::putData() {
  cout << "Name: " << name << endl
       << "Enrollment: " << enrollment << endl
       << "Gender: " << gender << endl;
}

class PhysicalFit : public BasicInfo {
  uint height;
  uint weight;

public:
  void getData();
  void putData();
};

void PhysicalFit::getData() {
  cout << "Weight (in kg): ";
  cin >> weight;
  cout << "Height (in cm): ";
  cin >> height;
}

void PhysicalFit::putData() {
  cout << "Weight (in kg): " << weight << endl
       << "Height (in cm): " << height << endl;
}

int main() {
  PhysicalFit x;
  x.BasicInfo::getData();
  x.getData();

  x.BasicInfo::putData();
  x.putData();

  return 0;
}

Name: acha
Enrollment: 4
Gender: f
Weight (in kg): 999
Height (in cm): 2
Name: acha
Enrollment: 4
Gender: f
Weight (in kg): 999
Height (in cm): 2