foo.cc: In function 'int main()':
foo.cc:8:7: error: 'yuedu' was not declared in this scope
  cin>>yuedu;
       ^~~~~
foo.cc:6:12: warning: unused variable 'yudu' [-Wunused-variable]
  int zuoye,yudu,xingquban;
            ^~~~

自豪的采用jd5进行评测(github.com/masnn/jd5)