foo.c: In function 'main':
foo.c:9:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    9 |                 if(i%4==0&&i%100!=0||i%400==0)
      |                    ~~~~~~^~~~~~~~~~
foo.c: In function 'ss':
foo.c:23:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   23 |                 if(year%4==0&&year%100!=0||year%400==0)
      |                    ~~~~~~~~~^~~~~~~~~~~~~

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