/in/foo.cc: In member function 'int Date::calday(Date)':
/in/foo.cc:46:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
/in/foo.cc: In member function 'int Date::day(int)':
/in/foo.cc:31:5: warning: control reaches end of non-void function [-Wreturn-type]
     }
     ^