use of scope resolution operator in c++

Prog 6: write a program for the use of scope resolution operator

#include<iostream.h>

#include <conio.h>
int x=10;

void main()

{

int x=20;

{

int A=x;

int x=30;

cout<<"\n in the inner block x is :"<

cout<<"A ="<

cout<<"\n from the scope resolution operator"<<::x;

}

cout<<"\n in the outer block x is :"<

cout<<"\n from the scope resolution operator"<<::x;

getch();

}

Output:

in the inner block x is :30

A =20

from the scope resolution operator10 in the outer block x is :20

from the scope resolution operator10