/in/foo.cc: In member function 'bool Date::Isleap(int)':
/in/foo.cc:12:32: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   12 |                 return y%100!=0&&y%4==0||y%400==0;
      |                        ~~~~~~~~^~~~~~~~
/in/foo.cc: In member function 'bool Date::Isleap()':
/in/foo.cc:16:32: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   16 |                 return y%100!=0&&y%4==0||y%400==0;
      |                        ~~~~~~~~^~~~~~~~