/in/foo.cc: In function 'int main()':
/in/foo.cc:2:23: error: unable to find string literal operator 'operator""Hello' with 'const char [1]', 'long unsigned int' arguments
 int main(){std::cout<<""Hello, World"";return 0;}
                       ^~~~~~~
/in/foo.cc:2:32: error: 'World' was not declared in this scope
 int main(){std::cout<<""Hello, World"";return 0;}
                                ^~~~~