Pointers in C++| Pointers in C++ Example|Pointers in C++ Program| Pointers in C++ In Hindi

 

Pointers in C++

Pointer is a variable in C++ that holds the address of another variable. They have data type just like variables, for example an integer type pointer can hold the address of an integer variable and an character type pointer can hold the address of char variable.

Fig: Pointers in C++

Syntax:

data_type *pointername;

How to declare pointer?

int *p, var

Program:

#include<iostream.h>

int main()

{

int *p,var=101;

p=&var;

cout<<”address of var:”<<&var<<endl;

cout<<”address of var:”<<p<<endl;

cout<<”address of p:”<<&p<<endl;

cout<<”value of var:”<<*p;

return 0;

}

Output:

Address of var:0x7fff5dfffc0c

Address of var:0x7fff5dfffc0c

 

Address of p:0x7fff5dfffc10

Value of var:101

Pointer and arrays

Arrays is that the array name alone represents the base address of array so while assigning the address of array to pointer don’t use ampersand sign(&).

p=arr;

Program:

#include<iostream.h>

int *p;

int arr[]={1,2,3,4,5,6};

p=arr;

for(int i=0;i<6;i++)

{

cout<<*p<<endl;

p++;

}

return 0;

 }

Output:

1

2

3

4

5

6