#include <iostream>

using namespace std;

int Fun(int value);

int main() {
     int i;

     i = 10;

     for (int i =0; i < 20; ++i) {
        cout << i << endl;

        {
            int x{Fun(i)};
            cout << &x << " " << x << endl;
       }

     }

     cout << i << endl;

     return 0;
}

int Fun(int value){
    cout << "Value is at " << &value << endl;
    return 2*value;
}