/in/foo.cc: In constructor 'DateTime::DateTime()':
/in/foo.cc:90:2: error: expected '{' before 'void'
  void Output()
  ^~~~
/in/foo.cc: In function 'int main(int, char**)':
/in/foo.cc:124:5: error: 'class DateTime' has no member named 'Output'
  dt.Output();
     ^~~~~~