foo.cc: In function 'int main()':
foo.cc:17:40: error: 'danaokongkong' was not declared in this scope
         if(a != "哈利波特" || b != danaokongkong)
                                        ^~~~~~~~~~~~~
foo.cc: At global scope:
foo.cc:22:2: error: expected unqualified-id before 'return'
  return 0;
  ^~~~~~
foo.cc:23:1: error: expected declaration before '}' token
 }
 ^

自豪的采用jd5进行评测(github.com/masnn/jd5)