Problem	helloworld
User	ljx
Submission Time	2026-02-14 09:39:15
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp:3:5: error: cannot declare ‘::main’ to be a global variable
3 | int main{
| ^~~~
helloworld.cpp:4:6: error: invalid user-defined conversion from ‘std::basic_ostream<char>’ to ‘int’ [-fpermissive]
4 | cout<<"Hello World"
| ~~~~^~~~~~~~~~~~~~~
In file included from /usr/include/c++/9/ios:44,
from /usr/include/c++/9/istream:38,
from /usr/include/c++/9/sstream:38,
from /usr/include/c++/9/complex:45,
from /usr/include/c++/9/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
from helloworld.cpp:1:
/usr/include/c++/9/bits/basic_ios.h:117:16: note: candidate is: ‘std::basic_ios<_CharT, _Traits>::operator bool() const [with _CharT = char; _Traits = std::char_traits<char>]’ <near match>
117 | explicit operator bool() const
| ^~~~~~~