A pointer is a variable that stores the address of another variable in c++.

The address of the variable you’re working with is assigned to the pointer variable that points to the same data type (such as an int or string).

The pointer is a variable, it is also known as a locator or indicator that points to an address of a value.

 Advantage of pointer :

Pointer reduces the code and improves the performance, it is used to retrieve strings, trees etc, and used with arrays, structures, and functions.

We can return multiple values from a function using a pointer.

It makes you able to access any memory location in the computer’s memory.

Also Read This :- structure in c++

Symbols used in pointer :

Declaration of Pointer in c++ :

datatype *var_name;
int *ptr;

Example of Pointer in c++ :

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
   int number=30;
   int *p;
   p=&number;//stores the address of number variable    
   cout<<"Address of number variable is:"<<&number<<endl;
   cout<<"Address of p variable is:"<<p<<endl;
   cout<<"Value of p variable is:"<<*p<<endl;
   return 0;
}

output

Address of number variable is:0x61ff08 Address of p variable is:0x61ff08 Value of p variable is:30