Palindrome or not in C++

Write a program (WAP) in C++ to calculate number is Palindrome or not.

#include <iostream>
using namespace std;
int main()
{
    int n, num, digit, rev = 0;
    cout << "Enter a Number:\n ";
    cin >> num;
    n = num;
    do
    {
       digit = num % 10;
       rev = (rev * 10) + digit;
       num = num / 10;
    }
    while (num != 0);
    cout << " Reverse of the number is: \n" << rev<<"\n";
    if (n == rev)
       cout << "This is a Palindrome Number.";
    else
       cout << "This is not a Palindrome Number.";
    return 0;
}