#include <iostream>              // uniquement en C++

using namespace std;

int i = 0; // ::i

int main(void)
{
 int i = 1;
 cout << "i = " << i << endl; // i = 1
 cout << "::i = " << ::i << endl; // ::i = 0
 {
  int i = 2;
  cout << "i = " << i << endl; // i = 2
  cout << "::i = " << ::i << endl; // ::i = 0
 }
 return 0;
}