Problem	helloworld
User	Elyssa278
Submission Time	2023-02-06 17:54:18
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp:3:6: error: ‘cout’ in namespace ‘std’ does not name a type
3 | std::cout << "Hello world\n";
| ^~~~
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from helloworld.cpp:1:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~