295
lab6/file.org
Normal file
295
lab6/file.org
Normal file
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* 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.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 16.cpp :wrap src text
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#include <iostream>
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using namespace std;
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class Book {
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private:
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char name[50];
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uint id;
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public:
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void getData();
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void putData();
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};
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void Book::getData() {
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cout << "Name of book: ";
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cin >> name;
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cout << "ID of book: ";
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cin >> id;
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}
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void Book::putData() {
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cout << "Name of book: " << name << endl << "ID of book: " << id << endl;
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}
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class Authorities : public Book {
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private:
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char author[50];
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char publisher[50];
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public:
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void getData();
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void putData();
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};
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void Authorities::getData() {
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cout << "Name of author: ";
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cin >> author;
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cout << "Name of publisher: ";
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cin >> publisher;
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}
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void Authorities::putData() {
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cout << "Name of author: " << author << endl
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<< "Name of publisher: " << publisher << endl;
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}
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class Publication : public Authorities {
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private:
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uint pageCount;
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uint year;
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public:
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void getData();
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void putData();
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};
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void Publication::getData() {
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cout << "Number of pages: ";
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cin >> pageCount;
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cout << "Year (YYYY): ";
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cin >> year;
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}
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void Publication::putData() {
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cout << "Number of pages: " << pageCount << endl << "Year: " << year << endl;
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}
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int main() {
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Publication p[3];
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for (auto &x: p) {
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x.Book::getData();
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x.Authorities::getData();
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x.getData();
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}
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for (auto &x: p) {
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x.Book::putData();
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x.Authorities::putData();
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x.putData();
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}
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}
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#+end_src
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#+begin_src
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ID of book: 4
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Name of author: a.
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Name of publisher: a.
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Number of pages: 4
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Year (YYYY): 4044
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Name of book: sahi
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ID of book: 5
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Name of author: baat
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Name of publisher: hai
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Number of pages: 555555
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Year (YYYY): 192
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Name of book: how
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ID of book: 349234
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Name of author: ok
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Name of publisher: test
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Number of pages: 99991293
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Year (YYYY): 2022
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Name of book: Allu
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ID of book: 4
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Name of author: a.
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Name of publisher: a.
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Number of pages: 4
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Year: 4044
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Name of book: sahi
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ID of book: 5
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Name of author: baat
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Name of publisher: hai
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Number of pages: 555555
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Year: 192
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Name of book: how
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ID of book: 349234
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Name of author: ok
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Name of publisher: test
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Number of pages: 99991293
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Year: 2022
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#+end_src
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#+LATEX: \clearpage
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* 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.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 17.cpp :results output :wrap src text
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#include <iostream>
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#include <math.h>
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using namespace std;
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class Shape {
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int stub;
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public:
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virtual void getData() { cout << "stub"; }
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virtual double area() {
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cout << "stub";
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return 0;
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}
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};
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class Triangle : public Shape {
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private:
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double sides[3];
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public:
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void getData();
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double area();
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};
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void Triangle::getData() {
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cout << "Enter 3 integers for the sides of triangle: \n";
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for (int i = 0; i < 3; i++)
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cin >> sides[i];
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}
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double Triangle::area() {
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double s = (sides[0] + sides[1] + sides[2]) / 2;
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return sqrt(s * (s - sides[0]) * (s - sides[1]) * (s - sides[2]));
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}
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class Rectangle : public Shape {
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private:
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double l;
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double b;
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public:
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void getData();
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double area();
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};
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void Rectangle::getData() {
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cout << "Enter length of rectangle: ";
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cin >> l;
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cout << "Enter breadh of rectangle: ";
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cin >> b;
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}
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double Rectangle::area() { return l * b; }
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int main() {
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Shape *s;
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Triangle t;
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Rectangle r;
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s = &t;
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s->getData();
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cout << "Area of the Shape: " << s->area() << endl;
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s = &r;
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s->getData();
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cout << "Area of the Shape: " << s->area() << endl;
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}
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#+end_src
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#+begin_src
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Enter 3 integers for the sides of triangle:
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4
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4
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4
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Area of the Shape: 6.9282
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Enter length of rectangle: 4
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Enter breadh of rectangle: 4
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Area of the Shape: 16
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#+end_src
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#+LATEX: \clearpage
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* 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.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 18.cpp :results output :wrap src text
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#include <iostream>
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using namespace std;
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class BasicInfo {
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private:
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char name[30];
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uint enrollment;
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char gender;
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public:
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void getData();
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void putData();
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};
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void BasicInfo::getData() {
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cout << "Name: ";
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cin >> name;
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cout << "Enrollment: ";
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cin >> enrollment;
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cout << "Gender: ";
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cin >> gender;
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}
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void BasicInfo::putData() {
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cout << "Name: " << name << endl
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<< "Enrollment: " << enrollment << endl
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<< "Gender: " << gender << endl;
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}
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class PhysicalFit : public BasicInfo {
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uint height;
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uint weight;
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public:
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void getData();
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void putData();
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};
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void PhysicalFit::getData() {
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cout << "Weight (in kg): ";
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cin >> weight;
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cout << "Height (in cm): ";
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cin >> height;
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}
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void PhysicalFit::putData() {
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cout << "Weight (in kg): " << weight << endl
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<< "Height (in cm): " << height << endl;
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}
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int main() {
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PhysicalFit x;
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x.BasicInfo::getData();
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x.getData();
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x.BasicInfo::putData();
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x.putData();
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return 0;
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}
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#+end_src
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#+begin_src
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Name: acha
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Enrollment: 4
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Gender: f
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Weight (in kg): 999
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Height (in cm): 2
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Name: acha
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Enrollment: 4
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Gender: f
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Weight (in kg): 999
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Height (in cm): 2
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#+end_src
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Reference in New Issue
Block a user