how to output a variable in c 2b 2b

1// i/o example
2
3#include <iostream>
4using namespace std;
5
6int main ()
7{
8  int i;
9  cout << "Please enter an integer value: ";
10  cin >> i;
11  cout << "The value you entered is " << i;
12  cout << " and its double is " << i*2 << ".\n";
13  return 0;
14}