Problem	helloworld
User	zhangdi
Submission Time	2025-05-23 22:39:49
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp:2:6: error: ‘cout’ in namespace ‘std’ does not name a type
2 | std::cout<<"Hello World"
| ^~~~
In file included from helloworld.cpp:1:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~