Given the following program: #include<iostream> using namespace std; int x = 100

Question

Given the following program:              

#include<iostream>

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 = ?

Explanation / Answer

Answer:

1st output statement: x = 220 // local variable value

2nd output statement: x = 100 //global variable value

3rd output statement: x = 300 inside block local variable value.

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