Is there any difference between '\n' and "\n

[ninja01]

That's right), Is there any difference between '\n' and "\n.

[JLBorges]

'\n' - char literal
"\n" - string literal (array of 2 char)

[ninja01]

Some lightning fast answer you got there),

Probably I asked the wrong question, which one is advised the first one or the second one?

[JLBorges]

When a single character is all that is needed, use '\n'
eg. std::cout << i << '\n' ;

When a null-terminated string is required, use "\n"
eg. std::strcat( cstr, "\n" ) ;

[ninja01]

Thanks @JLBorges

[Peter87]

When printing using std::cout or other std::ostreams ...

'\n' has the advantage that it's probably slightly more efficient (not that I think you would be able to notice).

"\n" has the advantage that it's much easier to add more characters later on without having to change the quotes.

[ninja01]

Always nice to ready you answers @Peter)

other std::ostreams ..., I am thinking there is only std::cout and std::cerr that are ostreams, are there more?

[Peter87]

Instances of std::ostringstream, std::ofstream, boost::asio::ip::tcp::iostream (third-party library) or your own class that inherits from std::ostream.

What I really meant was when you use << to output string literals.

In other situations there might be other trade-offs and you might not even have much of a choice (e.g. because a function only accepts a char or a string).

[seeplus]

I am thinking there is only std::cout and std::cerr that are ostreams, are there more?

std::clog
https://en.cppreference.com/w/cpp/io/clog
https://en.cppreference.com/w/cpp/io/basic_ostream

Also there are the wcxxx versions (wcout, wcerr, wclog).

[ninja01]

Understood, thank you everyone)