1#include <iostream>
2
3using namespace std;
4
5namespace{
6int x;
7namespace one{
8 int x= 250;
9void display(){
10cout << x << endl;
11}
12}
13
14}
15
16int main()
17{
18 x = 100;
19 cout << x <<endl;
20 one :: display();
21 return 0;
22}
23
24