What is pointer?

Pointer is a variable that contains a memory address of other variable. Pointer variable can be declared like the other variable. But, the data type is suffixed by a "*" character.

#include <iostream>;
using namespace std;

int main{

 return 0;
}

Playing with pointer

Reference,an object in a program

Pointer & Reference

#include <iostream>;
using namespace std;

int main{

 return 0;
}