Program in c++ of using scope resolution operator

#include<iostream.h>

#include<conio.h>

int b=100;

void main()

{

clrscr();

int b=50;

            {

            int bh=b;

            int b=25;

            cout<<"we are in the inner block";

            cout<<"bh="<<bh<<"\n";

            cout<<"b="<<b<<"\n";

            cout<<"::b="<<::b<<"\n";

            }

cout<<"\nwe are int the outer block\n";

cout<<"b="<<b<<"\n";

cout<<"::b"<<::b<<"\n";

getch();

}

Output: