#include<iostream>
using namespace std;

int x = 10;

int main(){

  x = 12;
  int x = 10;

  int i;
  for(i=0;i<5;i++){
    x=i;
    cout<<x<<"--"<<::x<<endl;
  }

  cout<<"value of x is "<<x<<endl;

  ::x = ::x + 2;

  cout<<"value of global x is "<<::x<<endl;
  cout<<i<<endl;

  return 0;

}