/in/foo.cc: In function 'int main()':
/in/foo.cc:9:2: error: expected ';' before 'cin'
  cin>>kl;
  ^~~
/in/foo.cc:10:9: warning: comparison with string literal results in unspecified behavior [-Waddress]
  if(kl=="猪鼻子")cout<<"门打开了";
         ^~~~~~~~~~~
/in/foo.cc:10:9: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]