What will be the output of this?

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1.00/5 (2 votes)

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What is output of the following programme?
#include <iostream>

using namespace std;

int x = 19; int main()

{

int x = 21;

(

int x

cout <<::X<<x<<::x<<"\n”;

}

return 0;

a.="" 414141="" b.="" 194121="" c.="" 214121="" d.="" 194119

<b="">What I have tried:

I have tried many websites but not getting the answe,so please help me out to find this answer.

Posted 16-Jun-22 5:50am

Himadri Jena

Updated 16-Jun-22 20:09pm

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jeron1 16-Jun-22 11:58am

Nothing, it doesn't compile.

merano99 16-Jun-22 16:19pm

The source code is clearly C++, but tagged as C.
Because of the many invalid codes, it will not show anything until the code is corrected.

2 solutions

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OriginalGriff · Answer 1 · 2022-06-16T05:58:00

None of the above: it won't compile ...

Errors

main.c: In function ‘main’:
main.c:19:4: error: expected ‘)’ before ‘x’
   19 | int x
      |    ^~
      |    )
main.c:17:1: note: to match this ‘(’
   17 | (
      | ^
main.c:21:21: warning: missing terminating " character
   21 | cout <<::X<<x<<::x<<"\n";
      |                     ^
main.c:21:21: error: missing terminating " character
   21 | cout <<::X<<x<<::x<<"\n";
      |                     ^~~~~~~
main.c:23:1: error: expected expression before ‘}’ token
   23 | }
      | ^
main.c: At top level:
main.c:25:1: error: expected identifier or ‘(’ before ‘return’
   25 | return 0;
      | ^~~~~~
main.c:26:1: error: expected identifier or ‘(’ before ‘}’ token
   26 | }
      | ^

CPallini · Answer 2 · 2022-06-16T20:09:00

As correctly pointed out by Griff, your code doesn't compile.
The following one

C++

#include <iostream>
using namespace std;

int x = 19;
int main()
{
  int x = 21;
  {
    int x = 42;
    cout << ::x << ", " << x << ", " << ::x << "\n";
  }
  return 0;
}

makes the compiler complain a bit

warning: unused variable ‘x’ [-Wunused-variable]
    7 |  int x = 21;

however it compiles and runs, producing the (expected) output

19, 42, 19

What will be the output of this?

2 solutions

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Solution 2

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