/in/foo.cc: In function 'int main()':
/in/foo.cc:3:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
 #define Isleap(y) y%4==0&&y%100!=0||y%400==0
                         ^
/in/foo.cc:11:7: note: in expansion of macro 'Isleap'
   if (Isleap(i))
       ^~~~~~
/in/foo.cc:3:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
 #define Isleap(y) y%4==0&&y%100!=0||y%400==0
                         ^
/in/foo.cc:14:7: note: in expansion of macro 'Isleap'
   if (Isleap(i))
       ^~~~~~