C++ | References | Question 6

Output of following C++ program?

filter_none

edit
close

play_arrow

link
brightness_4
code

#include<iostream>
using namespace std;
  
int main()
{
  int x = 10;
  int& ref = x;
  ref = 20;
  cout << "x = " << x << endl ;
  x = 30;
  cout << "ref = " << ref << endl;
  return 0;
}

chevron_right


(A)

x = 20
ref = 30

(B)



x = 20
ref = 20

(C)

x = 10
ref = 30

(D)

x = 30
ref = 30


Answer: (A)

Explanation: ref is an alias of x, so if we change either of them, we can see the change in other as well.

Quiz of this Question



My Personal Notes arrow_drop_up


Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.