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Practical-35

Write a cpp program for implementation of a this pointer.​

Introduction

Code​

Practical-35.cpp


#include <iostream>

using namespace std;

// Creating a Base class
class Base
{
public:
    int x;

    // Default Constructor
    Base()
    {
        x = 0;
    }

    Base(int a)
    {
        x = a;
    }
};

// Crating a derived class from Base class
class Derived : public Base
{
public:
    int y;

    // Default Constructor
    Derived()
    {
        y = 1;
    }

    Derived(int b)
    {
        y = b;
    }

    //printing the values of x and y using this pointer
    void print()
    {
        // 'this' pointer is used to access the members
        // of current object or class in which it lies.
        cout << " x = " << this->x;
        cout << " y = " << this->y;
    }

};

void main()
{
    Base b(10);
    Derived d(20);

    d.x = b.x;

    // Calling print() to show values of x and y.
    d.print();
    return 0;
}

Output​

x = 10 y = 20