this pointer in C++ Programs

Normally pointers can hold the address of it’s own type of variable. this is a keyword used to denote a pointer which can hold the address of any type of location. In C++ programs, this pointers are used to hold the address of objects of any class.

#include< iostream.h >

#include< conio.h >

class Exam

{

private:

int i;

public:

void setData (int a)

{

this->i=a;

cout<< "Address of the object is: -"<< this;

}

void show ()

{

cout<< "\nData member="<< this->i;

}

};

void main ()

{

clrscr ();

Exam s1, s2;

int i;

cout<< "\nEnter value for 1st object: -";

cin>>i;

s1.setData (i);

s1.show ();

cout<< "\nEnter value for 2nd object: -";

cin>>i;

s2.setData (i);

s2.show ();

getch ();

}