/in/foo.cc: In constructor 'DateTime::DateTime(int, int, int, int, int, int)':
/in/foo.cc:73:10: warning: 'DateTime::t' will be initialized after [-Wreorder]
     Time t;
          ^
/in/foo.cc:72:10: warning:   'Date DateTime::d' [-Wreorder]
     Date d;
          ^
/in/foo.cc:75:5: warning:   when initialized here [-Wreorder]
     DateTime(int y,int mon,int d,int h,int min,int s) : t(h,min,s),d(y,mon,d){}
     ^~~~~~~~