Main.cc:2:20: error: stray ‘\357’ in program using namespace std; ^ Main.cc:2:21: error: stray ‘\274’ in program using namespace std; ^ Main.cc:2:22: error: stray ‘\233’ in program using namespace std; ^ Main.cc:3:9: error: stray ‘\357’ in program int main() ^ Main.cc:3:10: error: stray ‘\274’ in program int main() ^ Main.cc:3:11: error: stray ‘\210’ in program int main() ^ Main.cc:3:12: error: stray ‘\357’ in program int main() ^ Main.cc:3:13: error: stray ‘\274’ in program int main() ^ Main.cc:3:14: error: stray ‘\211’ in program int main() ^ Main.cc:3:1: error: expected ‘;’ before ‘int’ int main() ^~~ Main.cc:3:5: error: cannot declare ‘::main’ to be a global variable int main() ^~~~ Main.cc:5:24: error: expected ‘}’ before ‘;’ token cout<<"hello,word!"; ^ Main.cc:5:9: error: invalid user-defined conversion from ‘std::basic_ostream’ to ‘int’ [-fpermissive] cout<<"hello,word!"; ~~~~^~~~~~~~~~~~~~~ In file included from /usr/include/c++/7/ios:44:0, from /usr/include/c++/7/ostream:38, from /usr/include/c++/7/iostream:39, from Main.cc:1: /usr/include/c++/7/bits/basic_ios.h:117:16: note: candidate is: std::basic_ios<_CharT, _Traits>::operator bool() const [with _CharT = char; _Traits = std::char_traits] explicit operator bool() const ^~~~~~~~ /usr/include/c++/7/bits/basic_ios.h:117:16: note: return type ‘bool’ of explicit conversion function cannot be converted to ‘int’ with a qualification conversion Main.cc:6:5: error: ‘my’ does not name a type my name is a cc; ^~ Main.cc:7:5: error: expected unqualified-id before ‘return’ return 0; ^~~~~~