Problem	helloworld
User	Yunjun18
Submission Time	2023-02-09 17:06:19
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

helloworld.cpp:4:5: error: cannot declare ‘::main’ to be a global variable
4 | int main {
| ^~~~
helloworld.cpp:5:7: error: no match for ‘operator<=’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} and ‘const char [12]’)
5 | cout <= "hello world";
| ~~~~ ^~ ~~~~~~~~~~~~~
| | |
| | const char [12]
| std::ostream {aka std::basic_ostream<char>}
In file included from /usr/include/c++/9/regex:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:110,
from helloworld.cpp:1:
/usr/include/c++/9/bits/regex.h:1059:5: note: candidate: ‘template<class _BiIter> bool std::__cxx11::operator<=(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)’
1059 | operator<=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/i