/in/foo.cc: In function 'int main()':
/in/foo.cc:13:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   13 |         if(y%4==0&&y%100!=0||y%400==0)
      |            ~~~~~~^~~~~~~~~~
/in/foo.cc:24:17: error: expected primary-expression before 'else'
   24 |                 else
      |                 ^~~~
/in/foo.cc:44:17: error: expected primary-expression before 'else'
   44 |                 else
      |                 ^~~~