emo { private: //Private Data member section     int X, Y; public: //Public Member function section     //Default or no argument constructor.     Demo()     {         X = 0;

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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// C++ program to demonstrate example of
// constructor using this pointer.

#include <iostream>
using namespace std;

class Demo {
private: //Private Data member section
    int X, Y;

public: //Public Member function section
    //Default or no argument constructor.
    Demo()
    {
        X = 0;
        Y = 0;

        cout << endl
             << "Constructor Called";
    }
    //Perameterized constructor.
    Demo(int X, int Y)
    {
        this->X = X;
        this->Y = Y;

        cout << endl
             << "Constructor Called";
    }

    //Destructor called when object is destroyed
    ~Demo()
    {
        cout << endl
             << "Destructor Called" << endl;
    }
    //To print output on console
    void putValues()
    {
        cout << endl
             << "Value of X : " << X;
        cout << endl
             << "Value of Y : " << Y << endl;
    }
};

//main function : entry point of program
int main()
{
    Demo d1 = Demo(10, 20);

    cout << endl
         << "D1 Value Are : ";
    d1.putValues();

    Demo d2 = Demo(30, 40);

    cout << endl
         << "D2 Value Are : ";
    d2.putValues();

    //cout << endl ;

    return 0;
}.

 

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