Reference variable to a pointer

Write a program to demonstrate the use of a reference pointer.

#include<iostream>
using namespace std;
int main()
{
	int a = 10;
	int *ptr = &a;
	int *rp = ptr;
	cout << "a = " << a << " &a = " << &a << endl;
	cout << "*ptr = " << *ptr << " ptr = " << ptr << endl;
	cout << "*rp = " << *rp << " rp = " <<rp << endl;
	return 0;
}

Output

a = 10 &a = 0x28fef4
*ptr = 10 ptr = 0x28fef4
*rp = 10 rp = 0x28fef4