/in/foo.cc: In member function 'void Date::Pass(int)':
/in/foo.cc:78:30: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(year%400==0 || year%4==0 && year%100!=0)
                    ~~~~~~~~~~^~~~~~~~~~~~~~
/in/foo.cc:90:32: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(year%400==0 || year%4==0 && year%100!=0)
                      ~~~~~~~~~~^~~~~~~~~~~~~~
/in/foo.cc: In member function 'int Date::MD(int, int)':
/in/foo.cc:124:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^