Is there any problem with this code?

Question

#include <iostream>
using namespace std;

int main()
{
/* Comment out printing of Hello world!

cout << "Hello world!"; // prints Hello world!

*/

return 0;
}

Answer 1

Yup, /* is a multi-line comment, it ends whenever it sees */. They might seem useless now, but comments are extremely useful. Use them around your code to explain what it does, because in the future you might forget when you come back and look at it.
Happy coding!

Answer 2

I don't see a problem, but this won't run anything since you commented out all the code within main() (not sure if you meant to do that). main() will be called, and right away will return 0;

Answer 3

Yeag actually it's in the lesson. I clicked on "Try it yourself" and it said "No Output". Just wondering why it's like this and included as a verified code...

Answer 4

Got it bro. The lesson meant that the whatever is in the comment, will be ignored. I changed the code to

#include <iostream>
using namespace std;

int main()
{
/* Comment out printing of Hello world!
*/
cout << "Hello world!"; // prints Hello world!

return 0;
}

and it worked. Cheers 🍻