Given the following program:

#include

using namespace std;

int x = 100;

int main() {

int x = 220;

cout << "1st output statement: x = " << x << endl;

cout << "2nd output statement: x = " << ::x << endl;

{

int x = 300;

cout << "3rd output statement: x = " << x << endl;

}

return 0;

}

What are the values of x in the following output statements?

1st output statement: x = ?

2nd output statement: x = ?

3rd output statement: x = ?