Scope resolution operator is used to uncover the hidden variables. It also allows access to global version of variables.

What is a scope resolution operator?

Scope resolution operator is used to uncover the hidden variables. It also allows access to global version of variables. 

Program Code:

#include<iostream>

using namespace std;

// global variable x of the program

int x=10; 

int main( ) 

{ 

// local variable x of the program

int x=20; 

cout<<"This is the value of local variable x = "<<x;

cout<<endl; 

// to access global variable in main program use scope resolution operator (::) in front of global variable

cout<<"This the value of global variable x = "<<::x; 

cout<<endl;

return 0;

} 

The program output is tested on www.jdoodle.com

Output:

This is the value of local variable x = 20

This the value of global variable x = 10

Thanks

Mukesh Rajput