/in/foo.cc: In function 'int main()':
/in/foo.cc:10:12: error: 'ge' was not declared in this scope
  cout<<100*ge+10*shi+bai;
            ^~
/in/foo.cc:10:18: error: 'shi' was not declared in this scope
  cout<<100*ge+10*shi+bai;
                  ^~~
/in/foo.cc:10:22: error: 'bai' was not declared in this scope
  cout<<100*ge+10*shi+bai;
                      ^~~