Problem	helloworld
User	user123
Submission Time	2026-06-11 10:58:21
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp: In function ‘int main()’:
helloworld.cpp:5:2: error: ‘string’ was not declared in this scope
5 | string str; std::cin>>str;
| ^~~~~~
helloworld.cpp:5:2: note: suggested alternatives:
In file included from /usr/include/c++/9/iosfwd:39,
from /usr/include/c++/9/ios:38,
from /usr/include/c++/9/ostream:38,
from /usr/include/c++/9/iostream:39,
from helloworld.cpp:1:
/usr/include/c++/9/bits/stringfwd.h:79:33: note: ‘std::string’
79 | typedef basic_string<char> string;
| ^~~~~~
In file included from /usr/include/c++/9/bits/locale_classes.h:40,
from /usr/include/c++/9/bits/ios_base.h:41,
from /usr/include/c++/9/ios:42,
from /usr/include/c++/9/ostream:38,
from /usr/include/c++/9/iostream:39,
from helloworl